2551328 has 24 divisors (see below), whose sum is σ = 5410188. Its totient is φ = 1177344.

The previous prime is 2551313. The next prime is 2551349. The reversal of 2551328 is 8231552.

It can be written as a sum of positive squares in 2 ways, for example, as 2521744 + 29584 = 1588^2 + 172^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 2551297 and 2551306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2651 + ... + 3482.

2^2551328 is an apocalyptic number.

It is an amenable number.

2551328 is an abundant number, since it is smaller than the sum of its proper divisors (2858860).

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

2551328 is a wasteful number, since it uses less digits than its factorization.

2551328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6156 (or 6148 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 2551328 is about 1597.2877010733. The cubic root of 2551328 is about 136.6434331580.

The spelling of 2551328 in words is "two million, five hundred fifty-one thousand, three hundred twenty-eight".