2156324 has 18 divisors (see below), whose sum is σ = 3914274. Its totient is φ = 1039360.

The previous prime is 2156317. The next prime is 2156339. The reversal of 2156324 is 4236512.

It can be written as a sum of positive squares in 3 ways, for example, as 792100 + 1364224 = 890^2 + 1168^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2156324.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3044 + ... + 3684.

2^2156324 is an apocalyptic number.

It is an amenable number.

2156324 is a deficient number, since it is larger than the sum of its proper divisors (1757950).

2156324 is a wasteful number, since it uses less digits than its factorization.

2156324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703 (or 672 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 2156324 is about 1468.4427125360. The cubic root of 2156324 is about 129.1927091899.

The spelling of 2156324 in words is "two million, one hundred fifty-six thousand, three hundred twenty-four".