2566456 has 32 divisors (see below), whose sum is σ = 5171040. Its totient is φ = 1189888.

The previous prime is 2566433. The next prime is 2566469. The reversal of 2566456 is 6546652.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15285 + ... + 15451.

It is an arithmetic number, because the mean of its divisors is an integer number (161595).

2^2566456 is an apocalyptic number.

It is an amenable number.

2566456 is an abundant number, since it is smaller than the sum of its proper divisors (2604584).

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

2566456 is a wasteful number, since it uses less digits than its factorization.

2566456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 299 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The square root of 2566456 is about 1602.0162296306. The cubic root of 2566456 is about 136.9129750833.

The spelling of 2566456 in words is "two million, five hundred sixty-six thousand, four hundred fifty-six".