2656458 has 48 divisors (see below), whose sum is σ = 6814080. Its totient is φ = 731808.

The previous prime is 2656457. The next prime is 2656499. The reversal of 2656458 is 8546562.

2656458 is a `hidden beast` number, since 2 + 6 + 5 + 645 + 8 = 666.

Its product of digits (57600) is a multiple of the sum of its prime divisors (768).

It is not an unprimeable number, because it can be changed into a prime (2656453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3291 + ... + 4017.

It is an arithmetic number, because the mean of its divisors is an integer number (141960).

2^2656458 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2656458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3407040).

2656458 is an abundant number, since it is smaller than the sum of its proper divisors (4157622).

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

2656458 is a wasteful number, since it uses less digits than its factorization.

2656458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 768 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 2656458 is about 1629.8644115386. The cubic root of 2656458 is about 138.4950712231.

The spelling of 2656458 in words is "two million, six hundred fifty-six thousand, four hundred fifty-eight".