2518820 has 12 divisors (see below), whose sum is σ = 5289564. Its totient is φ = 1007520.

The previous prime is 2518793. The next prime is 2518823. The reversal of 2518820 is 288152.

2518820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1865956 + 652864 = 1366^2 + 808^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2518820.

It is not an unprimeable number, because it can be changed into a prime (2518823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62951 + ... + 62990.

It is an arithmetic number, because the mean of its divisors is an integer number (440797).

2^2518820 is an apocalyptic number.

2518820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2518820 is an abundant number, since it is smaller than the sum of its proper divisors (2770744).

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

2518820 is a wasteful number, since it uses less digits than its factorization.

2518820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125950 (or 125948 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 2518820 is about 1587.0790780550. The cubic root of 2518820 is about 136.0605987154.

The spelling of 2518820 in words is "two million, five hundred eighteen thousand, eight hundred twenty".