2918320 has 20 divisors (see below), whose sum is σ = 6785280. Its totient is φ = 1167296.

The previous prime is 2918303. The next prime is 2918323. The reversal of 2918320 is 238192.

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

It is not an unprimeable number, because it can be changed into a prime (2918323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18160 + ... + 18319.

It is an arithmetic number, because the mean of its divisors is an integer number (339264).

2^2918320 is an apocalyptic number.

2918320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2918320 is an abundant number, since it is smaller than the sum of its proper divisors (3866960).

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

2918320 is a wasteful number, since it uses less digits than its factorization.

2918320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36492 (or 36486 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2918320 is about 1708.3091055193. The cubic root of 2918320 is about 142.9039732182.

The spelling of 2918320 in words is "two million, nine hundred eighteen thousand, three hundred twenty".