3638790 has 32 divisors (see below), whose sum is σ = 9704160. Its totient is φ = 970272.

The previous prime is 3638777. The next prime is 3638809. The reversal of 3638790 is 978363.

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, 6469 + ... + 7008.

It is an arithmetic number, because the mean of its divisors is an integer number (303255).

Almost surely, 2^3638790 is an apocalyptic number.

3638790 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3638790 is an abundant number, since it is smaller than the sum of its proper divisors (6065370).

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

3638790 is a wasteful number, since it uses less digits than its factorization.

3638790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13493 (or 13487 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 3638790 is about 1907.5612703135. The cubic root of 3638790 is about 153.8103867494.

The spelling of 3638790 in words is "three million, six hundred thirty-eight thousand, seven hundred ninety".