20938290504 has 32 divisors (see below), whose sum is σ = 53203856640. Its totient is φ = 6865012800.

The previous prime is 20938290479. The next prime is 20938290509. The reversal of 20938290504 is 40509283902.

It is not an unprimeable number, because it can be changed into a prime (20938290509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7149592 + ... + 7152519.

It is an arithmetic number, because the mean of its divisors is an integer number (1662620520).

Almost surely, 2^20938290504 is an apocalyptic number.

20938290504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20938290504 is an abundant number, since it is smaller than the sum of its proper divisors (32265566136).

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

20938290504 is a wasteful number, since it uses less digits than its factorization.

20938290504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14302181 (or 14302177 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 20938290504 in words is "twenty billion, nine hundred thirty-eight million, two hundred ninety thousand, five hundred four".