2397904 has 20 divisors (see below), whose sum is σ = 4711876. Its totient is φ = 1181952.

The previous prime is 2397869. The next prime is 2397907. The reversal of 2397904 is 4097932.

It can be written as a sum of positive squares in 2 ways, for example, as 1299600 + 1098304 = 1140^2 + 1048^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2397904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2397907) 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, 142 + ... + 2194.

2^2397904 is an apocalyptic number.

It is an amenable number.

2397904 is a deficient number, since it is larger than the sum of its proper divisors (2313972).

2397904 is a wasteful number, since it uses less digits than its factorization.

2397904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134 (or 2128 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 2397904 is about 1548.5167096289. The cubic root of 2397904 is about 133.8476027906.

The spelling of 2397904 in words is "two million, three hundred ninety-seven thousand, nine hundred four".