2397890 has 16 divisors (see below), whose sum is σ = 4708800. Its totient is φ = 871920.

The previous prime is 2397869. The next prime is 2397907. The reversal of 2397890 is 987932.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10790 + ... + 11009.

It is an arithmetic number, because the mean of its divisors is an integer number (294300).

2^2397890 is an apocalyptic number.

2397890 is a deficient number, since it is larger than the sum of its proper divisors (2310910).

2397890 is a wasteful number, since it uses less digits than its factorization.

2397890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21817.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 2397890 is about 1548.5121891674. The cubic root of 2397890 is about 133.8473423034.

The spelling of 2397890 in words is "two million, three hundred ninety-seven thousand, eight hundred ninety".