2721156 has 24 divisors (see below), whose sum is σ = 6723360. Its totient is φ = 853632.

The previous prime is 2721143. The next prime is 2721163. The reversal of 2721156 is 6511272.

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, 6466 + ... + 6873.

It is an arithmetic number, because the mean of its divisors is an integer number (280140).

2^2721156 is an apocalyptic number.

It is an amenable number.

2721156 is an abundant number, since it is smaller than the sum of its proper divisors (4002204).

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

2721156 is a wasteful number, since it uses less digits than its factorization.

2721156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13363 (or 13361 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 2721156 is about 1649.5926769964. The cubic root of 2721156 is about 139.6104134781.

It can be divided in two parts, 272 and 1156, that multiplied together give a cube (314432 = 68³).

The spelling of 2721156 in words is "two million, seven hundred twenty-one thousand, one hundred fifty-six".