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30925956 = 223103131191
BaseRepresentation
bin111010111111…
…0010010000100
32011012012102210
41311332102010
530404112311
63022503420
7523603065
oct165762204
964165383
1030925956
1116503146
12a434b70
13653a5a9
14417056c
152aad3a6
hex1d7e484

30925956 has 48 divisors (see below), whose sum is σ = 73801728. Its totient is φ = 10077600.

The previous prime is 30925933. The next prime is 30925997. The reversal of 30925956 is 65952903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161821 + ... + 162011.

It is an arithmetic number, because the mean of its divisors is an integer number (1537536).

Almost surely, 230925956 is an apocalyptic number.

It is an amenable number.

30925956 is an abundant number, since it is smaller than the sum of its proper divisors (42875772).

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

30925956 is a wasteful number, since it uses less digits than its factorization.

30925956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 430 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 39.

The square root of 30925956 is about 5561.1110400710. Note that the first 3 decimals coincide. The cubic root of 30925956 is about 313.8877579003.

The spelling of 30925956 in words is "thirty million, nine hundred twenty-five thousand, nine hundred fifty-six".

Divisors: 1 2 3 4 6 12 103 131 191 206 262 309 382 393 412 524 573 618 764 786 1146 1236 1572 2292 13493 19673 25021 26986 39346 40479 50042 53972 59019 75063 78692 80958 100084 118038 150126 161916 236076 300252 2577163 5154326 7731489 10308652 15462978 30925956