2137904 has 20 divisors (see below), whose sum is σ = 4244520. Its totient is φ = 1042560.

The previous prime is 2137879. The next prime is 2137907. The reversal of 2137904 is 4097312.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2137907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974 + ... + 2285.

It is an arithmetic number, because the mean of its divisors is an integer number (212226).

2^2137904 is an apocalyptic number.

It is an amenable number.

2137904 is a deficient number, since it is larger than the sum of its proper divisors (2106616).

2137904 is a wasteful number, since it uses less digits than its factorization.

2137904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308 (or 3302 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 2137904 is about 1462.1573102782. The cubic root of 2137904 is about 128.8237884125.

The spelling of 2137904 in words is "two million, one hundred thirty-seven thousand, nine hundred four".