30923328990 has 32 divisors (see below), whose sum is σ = 75795056640. Its totient is φ = 8070769184.

The previous prime is 30923328983. The next prime is 30923329009. The reversal of 30923328990 is 9982332903.

It is a congruent number.

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, 10964310 + ... + 10967129.

It is an arithmetic number, because the mean of its divisors is an integer number (2368595520).

Almost surely, 2^30923328990 is an apocalyptic number.

30923328990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30923328990 is an abundant number, since it is smaller than the sum of its proper divisors (44871727650).

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

30923328990 is a wasteful number, since it uses less digits than its factorization.

30923328990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21931496.

The product of its (nonzero) digits is 629856, while the sum is 48.

The spelling of 30923328990 in words is "thirty billion, nine hundred twenty-three million, three hundred twenty-eight thousand, nine hundred ninety".