30703288640 has 56 divisors (see below), whose sum is σ = 76960232160. Its totient is φ = 11634928128.

The previous prime is 30703288631. The next prime is 30703288673. The reversal of 30703288640 is 4688230703.

It is a super-2 number, since 2×30703288640² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2518862 + ... + 2531021.

It is an arithmetic number, because the mean of its divisors is an integer number (1374289860).

Almost surely, 2^30703288640 is an apocalyptic number.

It is an amenable number.

30703288640 is an abundant number, since it is smaller than the sum of its proper divisors (46256943520).

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

30703288640 is a wasteful number, since it uses less digits than its factorization.

30703288640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5049919 (or 5049909 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 30703288640 in words is "thirty billion, seven hundred three million, two hundred eighty-eight thousand, six hundred forty".