30512647040 has 32 divisors (see below), whose sum is σ = 72944298360. Its totient is φ = 12205058560.

The previous prime is 30512647027. The next prime is 30512647051. The reversal of 30512647040 is 4074621503.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 30512646988 and 30512647006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23837366 + ... + 23838645.

Almost surely, 2^30512647040 is an apocalyptic number.

It is an amenable number.

30512647040 is an abundant number, since it is smaller than the sum of its proper divisors (42431651320).

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

30512647040 is an equidigital number, since it uses as much as digits as its factorization.

30512647040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47676030 (or 47676018 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 30512647040 in words is "thirty billion, five hundred twelve million, six hundred forty-seven thousand, forty".