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30053880 = 23325312693
BaseRepresentation
bin111001010100…
…1010111111000
32002112220011200
41302221113320
530143211010
62552054200
7513311433
oct162512770
962486150
1030053880
1115a67a1a
12a094360
1362c367c
143dc481a
152989cc0
hex1ca95f8

30053880 has 96 divisors (see below), whose sum is σ = 100863360. Its totient is φ = 7752960.

The previous prime is 30053869. The next prime is 30053887. The reversal of 30053880 is 8835003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30053887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9814 + ... + 12506.

It is an arithmetic number, because the mean of its divisors is an integer number (1050660).

Almost surely, 230053880 is an apocalyptic number.

30053880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30053880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50431680).

30053880 is an abundant number, since it is smaller than the sum of its proper divisors (70809480).

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

30053880 is a wasteful number, since it uses less digits than its factorization.

30053880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741 (or 2734 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 30053880 is about 5482.1419171707. The cubic root of 30053880 is about 310.9091589953.

Adding to 30053880 its reverse (8835003), we get a palindrome (38888883).

The spelling of 30053880 in words is "thirty million, fifty-three thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 31 36 40 45 60 62 72 90 93 120 124 155 180 186 248 279 310 360 372 465 558 620 744 930 1116 1240 1395 1860 2232 2693 2790 3720 5386 5580 8079 10772 11160 13465 16158 21544 24237 26930 32316 40395 48474 53860 64632 80790 83483 96948 107720 121185 161580 166966 193896 242370 250449 323160 333932 417415 484740 500898 667864 751347 834830 969480 1001796 1252245 1502694 1669660 2003592 2504490 3005388 3339320 3756735 5008980 6010776 7513470 10017960 15026940 30053880