30839615940 has 48 divisors (see below), whose sum is σ = 98686772352. Its totient is φ = 7049054976.

The previous prime is 30839615929. The next prime is 30839615993. The reversal of 30839615940 is 4951693803.

It is a super-2 number, since 2×30839615940² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30839615940.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36713409 + ... + 36714248.

It is an arithmetic number, because the mean of its divisors is an integer number (2055974424).

Almost surely, 2^30839615940 is an apocalyptic number.

30839615940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30839615940 is an abundant number, since it is smaller than the sum of its proper divisors (67847156412).

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

30839615940 is a wasteful number, since it uses less digits than its factorization.

30839615940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73427676 (or 73427674 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 30839615940 in words is "thirty billion, eight hundred thirty-nine million, six hundred fifteen thousand, nine hundred forty".