2639156 has 12 divisors (see below), whose sum is σ = 4973892. Its totient is φ = 1218048.

The previous prime is 2639149. The next prime is 2639171. The reversal of 2639156 is 6519362.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1464100 + 1175056 = 1210^2 + 1084^2 .

It is a congruent number.

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, 25325 + ... + 25428.

It is an arithmetic number, because the mean of its divisors is an integer number (414491).

2^2639156 is an apocalyptic number.

2639156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2639156 is a deficient number, since it is larger than the sum of its proper divisors (2334736).

2639156 is a wasteful number, since it uses less digits than its factorization.

2639156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50770 (or 50768 counting only the distinct ones).

The product of its digits is 9720, while the sum is 32.

The square root of 2639156 is about 1624.5479371197. The cubic root of 2639156 is about 138.1937347546.

The spelling of 2639156 in words is "two million, six hundred thirty-nine thousand, one hundred fifty-six".