30687900892 has 24 divisors (see below), whose sum is σ = 59388546672. Its totient is φ = 13757961600.

The previous prime is 30687900889. The next prime is 30687900913. The reversal of 30687900892 is 29800978603.

It is a super-2 number, since 2×30687900892² (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, 4773859 + ... + 4780282.

It is an arithmetic number, because the mean of its divisors is an integer number (2474522778).

Almost surely, 2^30687900892 is an apocalyptic number.

It is an amenable number.

30687900892 is a deficient number, since it is larger than the sum of its proper divisors (28700645780).

30687900892 is a wasteful number, since it uses less digits than its factorization.

30687900892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9554229 (or 9554227 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 30687900892 in words is "thirty billion, six hundred eighty-seven million, nine hundred thousand, eight hundred ninety-two".