2315920 has 20 divisors (see below), whose sum is σ = 5384700. Its totient is φ = 926336.

The previous prime is 2315903. The next prime is 2315947. The reversal of 2315920 is 295132.

It can be written as a sum of positive squares in 2 ways, for example, as 1774224 + 541696 = 1332^2 + 736^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 2315891 and 2315900.

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, 14395 + ... + 14554.

It is an arithmetic number, because the mean of its divisors is an integer number (269235).

2^2315920 is an apocalyptic number.

2315920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2315920 is an abundant number, since it is smaller than the sum of its proper divisors (3068780).

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

2315920 is a wasteful number, since it uses less digits than its factorization.

2315920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28962 (or 28956 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 2315920 is about 1521.8147061978. The cubic root of 2315920 is about 132.3044701133.

The spelling of 2315920 in words is "two million, three hundred fifteen thousand, nine hundred twenty".