3890240 has 28 divisors (see below), whose sum is σ = 9264396. Its totient is φ = 1555968.

The previous prime is 3890239. The next prime is 3890261. The reversal of 3890240 is 420983.

It can be written as a sum of positive squares in 2 ways, for example, as 678976 + 3211264 = 824^2 + 1792^2 .

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, 5759 + ... + 6398.

Almost surely, 2^3890240 is an apocalyptic number.

It is an amenable number.

3890240 is an abundant number, since it is smaller than the sum of its proper divisors (5374156).

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

3890240 is a wasteful number, since it uses less digits than its factorization.

3890240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12174 (or 12164 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 3890240 is about 1972.3691338084. The cubic root of 3890240 is about 157.2746756983.

The spelling of 3890240 in words is "three million, eight hundred ninety thousand, two hundred forty".