3904520 has 16 divisors (see below), whose sum is σ = 8785260. Its totient is φ = 1561792.

The previous prime is 3904517. The next prime is 3904547. The reversal of 3904520 is 254093.

It can be written as a sum of positive squares in 2 ways, for example, as 3833764 + 70756 = 1958^2 + 266^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48767 + ... + 48846.

Almost surely, 2^3904520 is an apocalyptic number.

It is an amenable number.

3904520 is an abundant number, since it is smaller than the sum of its proper divisors (4880740).

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

3904520 is a wasteful number, since it uses less digits than its factorization.

3904520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97624 (or 97620 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 3904520 is about 1975.9858299087. The cubic root of 3904520 is about 157.4668780606.

The spelling of 3904520 in words is "three million, nine hundred four thousand, five hundred twenty".