2915280 has 60 divisors (see below), whose sum is σ = 9792900. Its totient is φ = 777216.

The previous prime is 2915261. The next prime is 2915281. The reversal of 2915280 is 825192.

It can be written as a sum of positive squares in 2 ways, for example, as 876096 + 2039184 = 936^2 + 1428^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2915281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1305 + ... + 2744.

It is an arithmetic number, because the mean of its divisors is an integer number (163215).

2^2915280 is an apocalyptic number.

2915280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2915280 is an abundant number, since it is smaller than the sum of its proper divisors (6877620).

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

2915280 is a wasteful number, since it uses less digits than its factorization.

2915280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068 (or 4059 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 2915280 is about 1707.4191049652. The cubic root of 2915280 is about 142.8543351829.

The spelling of 2915280 in words is "two million, nine hundred fifteen thousand, two hundred eighty".