2556036 has 120 divisors (see below), whose sum is σ = 8131200. Its totient is φ = 698544.

The previous prime is 2556023. The next prime is 2556041. The reversal of 2556036 is 6306552.

2556036 is a `hidden beast` number, since 2 + 55 + 603 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 111121 + ... + 111143.

It is an arithmetic number, because the mean of its divisors is an integer number (67760).

2^2556036 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 2556036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4065600).

2556036 is an abundant number, since it is smaller than the sum of its proper divisors (5575164).

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

2556036 is a wasteful number, since it uses less digits than its factorization.

2556036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60 (or 35 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 2556036 is about 1598.7607700966. The cubic root of 2556036 is about 136.7274315021.

The spelling of 2556036 in words is "two million, five hundred fifty-six thousand, thirty-six".