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30250000080 = 24325411024729
BaseRepresentation
bin11100001011000010…
…100101111011010000
32220002011201020000100
4130023002211323100
5443423000000310
621521402252400
72120423521026
oct341302457320
986064636010
1030250000080
1111913377873
125a427b7100
132b11107841
14166d724716
15bc0a5cec0
hex70b0a5ed0

30250000080 has 120 divisors (see below), whose sum is σ = 104067479880. Its totient is φ = 7869911040.

The previous prime is 30250000037. The next prime is 30250000091. The reversal of 30250000080 is 8000005203.

It can be written as a sum of positive squares in 4 ways, for example, as 165791376 + 30084208704 = 12876^2 + 173448^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 482845 + ... + 541884.

It is an arithmetic number, because the mean of its divisors is an integer number (867228999).

Almost surely, 230250000080 is an apocalyptic number.

30250000080 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30250000080 is an abundant number, since it is smaller than the sum of its proper divisors (73817479800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30250000080 is a wasteful number, since it uses less digits than its factorization.

30250000080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024789 (or 1024780 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 30250000080 its reverse (8000005203), we get a palindrome (38250005283).

The spelling of 30250000080 in words is "thirty billion, two hundred fifty million, eighty", and thus it is an aban number.

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 36 40 41 45 48 60 72 80 82 90 120 123 144 164 180 205 240 246 328 360 369 410 492 615 656 720 738 820 984 1230 1476 1640 1845 1968 2460 2952 3280 3690 4920 5904 7380 9840 14760 29520 1024729 2049458 3074187 4098916 5123645 6148374 8197832 9222561 10247290 12296748 15370935 16395664 18445122 20494580 24593496 30741870 36890244 40989160 42013889 46112805 49186992 61483740 73780488 81978320 84027778 92225610 122967480 126041667 147560976 168055556 184451220 210069445 245934960 252083334 336111112 368902440 378125001 420138890 504166668 630208335 672222224 737804880 756250002 840277780 1008333336 1260416670 1512500004 1680555560 1890625005 2016666672 2520833340 3025000008 3361111120 3781250010 5041666680 6050000016 7562500020 10083333360 15125000040 30250000080