30447135972 has 72 divisors (see below), whose sum is σ = 84002903712. Its totient is φ = 9221721600.

The previous prime is 30447135967. The next prime is 30447135973. The reversal of 30447135972 is 27953174403.

30447135972 is a `hidden beast` number, since 3 + 0 + 4 + 47 + 13 + 597 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (30447135973) 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, 805603 + ... + 842549.

It is an arithmetic number, because the mean of its divisors is an integer number (1166706996).

Almost surely, 2^30447135972 is an apocalyptic number.

It is an amenable number.

30447135972 is an abundant number, since it is smaller than the sum of its proper divisors (53555767740).

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

30447135972 is a wasteful number, since it uses less digits than its factorization.

30447135972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39049 (or 39044 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 30447135972 in words is "thirty billion, four hundred forty-seven million, one hundred thirty-five thousand, nine hundred seventy-two".