30920278904 has 64 divisors (see below), whose sum is σ = 59818318560. Its totient is φ = 14974658560.

The previous prime is 30920278871. The next prime is 30920278933. The reversal of 30920278904 is 40987202903.

It is a super-2 number, since 2×30920278904² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36079244 + ... + 36080100.

Almost surely, 2^30920278904 is an apocalyptic number.

It is an amenable number.

30920278904 is a deficient number, since it is larger than the sum of its proper divisors (28898039656).

30920278904 is a wasteful number, since it uses less digits than its factorization.

30920278904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568 (or 1564 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 30920278904 in words is "thirty billion, nine hundred twenty million, two hundred seventy-eight thousand, nine hundred four".