2172956 has 12 divisors (see below), whose sum is σ = 3838968. Its totient is φ = 1076112.

The previous prime is 2172949. The next prime is 2172967. The reversal of 2172956 is 6592712.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2111 + ... + 2966.

It is an arithmetic number, because the mean of its divisors is an integer number (319914).

2^2172956 is an apocalyptic number.

It is an amenable number.

2172956 is a deficient number, since it is larger than the sum of its proper divisors (1666012).

2172956 is a wasteful number, since it uses less digits than its factorization.

2172956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5188 (or 5186 counting only the distinct ones).

The product of its digits is 7560, while the sum is 32.

The square root of 2172956 is about 1474.0949765873. The cubic root of 2172956 is about 129.5240187407.

The spelling of 2172956 in words is "two million, one hundred seventy-two thousand, nine hundred fifty-six".