2508978 has 16 divisors (see below), whose sum is σ = 5236416. Its totient is φ = 799920.

The previous prime is 2508971. The next prime is 2509027. The reversal of 2508978 is 8798052.

It is not an unprimeable number, because it can be changed into a prime (2508971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8953 + ... + 9228.

It is an arithmetic number, because the mean of its divisors is an integer number (327276).

2^2508978 is an apocalyptic number.

2508978 is an abundant number, since it is smaller than the sum of its proper divisors (2727438).

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

2508978 is a wasteful number, since it uses less digits than its factorization.

2508978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18209.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 2508978 is about 1583.9753785965. The cubic root of 2508978 is about 135.8831536755.

It can be divided in two parts, 2508 and 978, that added together give a triangular number (3486 = T₈₃).

The spelling of 2508978 in words is "two million, five hundred eight thousand, nine hundred seventy-eight".