3644920 has 32 divisors (see below), whose sum is σ = 8255520. Its totient is φ = 1448320.

The previous prime is 3644899. The next prime is 3644947. The reversal of 3644920 is 294463.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11565 + ... + 11875.

It is an arithmetic number, because the mean of its divisors is an integer number (257985).

Almost surely, 2^3644920 is an apocalyptic number.

It is an amenable number.

3644920 is an abundant number, since it is smaller than the sum of its proper divisors (4610600).

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

3644920 is a wasteful number, since it uses less digits than its factorization.

3644920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 3644920 is about 1909.1673577767. The cubic root of 3644920 is about 153.8967092826.

The spelling of 3644920 in words is "three million, six hundred forty-four thousand, nine hundred twenty".