30920987080 has 16 divisors (see below), whose sum is σ = 69572221020. Its totient is φ = 12368394816.

The previous prime is 30920987051. The next prime is 30920987113. The reversal of 30920987080 is 8078902903.

It can be written as a sum of positive squares in 2 ways, for example, as 30751831044 + 169156036 = 175362^2 + 13006^2 .

It is a super-2 number, since 2×30920987080² (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 30920987080.

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, 386512299 + ... + 386512378.

Almost surely, 2^30920987080 is an apocalyptic number.

It is an amenable number.

30920987080 is an abundant number, since it is smaller than the sum of its proper divisors (38651233940).

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

30920987080 is a wasteful number, since it uses less digits than its factorization.

30920987080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773024688 (or 773024684 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 30920987080 in words is "thirty billion, nine hundred twenty million, nine hundred eighty-seven thousand, eighty".