2657872 has 40 divisors (see below), whose sum is σ = 6200000. Its totient is φ = 1078272.

The previous prime is 2657867. The next prime is 2657887. The reversal of 2657872 is 2787562.

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, 1504 + ... + 2752.

It is an arithmetic number, because the mean of its divisors is an integer number (155000).

2^2657872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2657872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3100000).

2657872 is an abundant number, since it is smaller than the sum of its proper divisors (3542128).

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

2657872 is a wasteful number, since it uses less digits than its factorization.

2657872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 1277 counting only the distinct ones).

The product of its digits is 47040, while the sum is 37.

The square root of 2657872 is about 1630.2981322445. The cubic root of 2657872 is about 138.5196399401.

The spelling of 2657872 in words is "two million, six hundred fifty-seven thousand, eight hundred seventy-two".