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30805325080 = 2352333484049
BaseRepresentation
bin11100101100001000…
…111111010100011000
32221111212122122200221
4130230020333110120
51001042130400310
622052441005424
72140245641245
oct345410772430
987455578627
1030805325080
1112078891752
125b78783874
132b9c190a0a
1416c339c5cc
15c046a3ada
hex72c23f518

30805325080 has 32 divisors (see below), whose sum is σ = 72325548000. Its totient is φ = 11786384896.

The previous prime is 30805325077. The next prime is 30805325101. The reversal of 30805325080 is 8052350803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16741105 + ... + 16742944.

It is an arithmetic number, because the mean of its divisors is an integer number (2260173375).

Almost surely, 230805325080 is an apocalyptic number.

It is an amenable number.

30805325080 is an abundant number, since it is smaller than the sum of its proper divisors (41520222920).

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

30805325080 is a wasteful number, since it uses less digits than its factorization.

30805325080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33484083 (or 33484079 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 30805325080 its reverse (8052350803), we get a palindrome (38857675883).

The spelling of 30805325080 in words is "thirty billion, eight hundred five million, three hundred twenty-five thousand, eighty".

Divisors: 1 2 4 5 8 10 20 23 40 46 92 115 184 230 460 920 33484049 66968098 133936196 167420245 267872392 334840490 669680980 770133127 1339361960 1540266254 3080532508 3850665635 6161065016 7701331270 15402662540 30805325080