2604816 has 30 divisors (see below), whose sum is σ = 7290270. Its totient is φ = 868224.

The previous prime is 2604803. The next prime is 2604821. The reversal of 2604816 is 6184062.

It can be written as a sum of positive squares in only one way, i.e., 2547216 + 57600 = 1596^2 + 240^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2604816.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8901 + ... + 9188.

It is an arithmetic number, because the mean of its divisors is an integer number (243009).

2^2604816 is an apocalyptic number.

It is an amenable number.

2604816 is an abundant number, since it is smaller than the sum of its proper divisors (4685454).

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

2604816 is a wasteful number, since it uses less digits than its factorization.

2604816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18103 (or 18094 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2604816 is about 1613.9442369549. The cubic root of 2604816 is about 137.5917360279.

Adding to 2604816 its reverse (6184062), we get a palindrome (8788878).

The spelling of 2604816 in words is "two million, six hundred four thousand, eight hundred sixteen".