2156284 has 12 divisors (see below), whose sum is σ = 4063864. Its totient is φ = 995184.

The previous prime is 2156279. The next prime is 2156299. The reversal of 2156284 is 4826512.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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, 20682 + ... + 20785.

2^2156284 is an apocalyptic number.

It is an amenable number.

2156284 is a deficient number, since it is larger than the sum of its proper divisors (1907580).

2156284 is a wasteful number, since it uses less digits than its factorization.

2156284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41484 (or 41482 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 2156284 is about 1468.4290926020. The cubic root of 2156284 is about 129.1919103396.

The spelling of 2156284 in words is "two million, one hundred fifty-six thousand, two hundred eighty-four".