3638408 has 32 divisors (see below), whose sum is σ = 7464960. Its totient is φ = 1655040.

The previous prime is 3638407. The next prime is 3638413. The reversal of 3638408 is 8048363.

It is not an unprimeable number, because it can be changed into a prime (3638407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3785 + ... + 4647.

It is an arithmetic number, because the mean of its divisors is an integer number (233280).

Almost surely, 2^3638408 is an apocalyptic number.

It is an amenable number.

3638408 is an abundant number, since it is smaller than the sum of its proper divisors (3826552).

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

3638408 is a wasteful number, since it uses less digits than its factorization.

3638408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917 (or 913 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 3638408 is about 1907.4611398401. The cubic root of 3638408 is about 153.8050042254.

The spelling of 3638408 in words is "three million, six hundred thirty-eight thousand, four hundred eight".