3902690 has 32 divisors (see below), whose sum is σ = 8118144. Its totient is φ = 1335040.

The previous prime is 3902687. The next prime is 3902713. The reversal of 3902690 is 962093.

3902690 = 41² + 42² + ... + 227².

It is a super-2 number, since 2×3902690² = 30461978472200, which contains 22 as substring.

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, 827 + ... + 2913.

It is an arithmetic number, because the mean of its divisors is an integer number (253692).

Almost surely, 2^3902690 is an apocalyptic number.

3902690 is an abundant number, since it is smaller than the sum of its proper divisors (4215454).

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

3902690 is a wasteful number, since it uses less digits than its factorization.

3902690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 3902690 is about 1975.5227156376. The cubic root of 3902690 is about 157.4422732933.

The spelling of 3902690 in words is "three million, nine hundred two thousand, six hundred ninety".