2315520 has 144 divisors (see below), whose sum is σ = 8339520. Its totient is φ = 608256.

The previous prime is 2315503. The next prime is 2315539. The reversal of 2315520 is 255132.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2315493 and 2315502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34527 + ... + 34593.

2^2315520 is an apocalyptic number.

2315520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2315520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4169760).

2315520 is an abundant number, since it is smaller than the sum of its proper divisors (6024000).

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

2315520 is an equidigital number, since it uses as much as digits as its factorization.

2315520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 2315520 is about 1521.6832784781. The cubic root of 2315520 is about 132.2968525740.

The spelling of 2315520 in words is "two million, three hundred fifteen thousand, five hundred twenty".