2638928904 has 64 divisors (see below), whose sum is σ = 6992568000. Its totient is φ = 827049984.

The previous prime is 2638928893. The next prime is 2638928917. The reversal of 2638928904 is 4098298362.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 481572 + ... + 487020.

It is an arithmetic number, because the mean of its divisors is an integer number (109258875).

Almost surely, 2^2638928904 is an apocalyptic number.

2638928904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2638928904 is an abundant number, since it is smaller than the sum of its proper divisors (4353639096).

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

2638928904 is a wasteful number, since it uses less digits than its factorization.

2638928904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6662 (or 6658 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 2638928904 is about 51370.5061684231. The cubic root of 2638928904 is about 1381.8977084287.

The spelling of 2638928904 in words is "two billion, six hundred thirty-eight million, nine hundred twenty-eight thousand, nine hundred four".