2315540 has 12 divisors (see below), whose sum is σ = 4862676. Its totient is φ = 926208.

The previous prime is 2315539. The next prime is 2315567. The reversal of 2315540 is 455132.

It can be written as a sum of positive squares in 2 ways, for example, as 498436 + 1817104 = 706^2 + 1348^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 115777 = 2315540 / (2 + 3 + 1 + 5 + 5 + 4 + 0).

It is a congruent number.

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, 57869 + ... + 57908.

It is an arithmetic number, because the mean of its divisors is an integer number (405223).

2^2315540 is an apocalyptic number.

2315540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2315540 is an abundant number, since it is smaller than the sum of its proper divisors (2547136).

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

2315540 is a wasteful number, since it uses less digits than its factorization.

2315540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115786 (or 115784 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 2315540 is about 1521.6898501337. The cubic root of 2315540 is about 132.2972334718.

The spelling of 2315540 in words is "two million, three hundred fifteen thousand, five hundred forty".