3640924 has 24 divisors (see below), whose sum is σ = 7711200. Its totient is φ = 1468416.

The previous prime is 3640909. The next prime is 3640933. The reversal of 3640924 is 4290463.

It is a Harshad number since it is a multiple of its sum of digits (28).

3640924 is a modest number, since divided by 924 gives 364 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 3640892 and 3640901.

It is a congruent number.

It is an unprimeable number.

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, 3349 + ... + 4300.

It is an arithmetic number, because the mean of its divisors is an integer number (321300).

Almost surely, 2^3640924 is an apocalyptic number.

3640924 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

3640924 is an abundant number, since it is smaller than the sum of its proper divisors (4070276).

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

3640924 is a wasteful number, since it uses less digits than its factorization.

3640924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7677 (or 7675 counting only the distinct ones).

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

The square root of 3640924 is about 1908.1205412657. The cubic root of 3640924 is about 153.8404486859.

The spelling of 3640924 in words is "three million, six hundred forty thousand, nine hundred twenty-four".