2156224828 has 24 divisors (see below), whose sum is σ = 3916874304. Its totient is φ = 1037870400.

The previous prime is 2156224817. The next prime is 2156224877. The reversal of 2156224828 is 8284226512.

It is a hoax number, since the sum of its digits (40) 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82543 + ... + 105478.

It is an arithmetic number, because the mean of its divisors is an integer number (163203096).

Almost surely, 2^2156224828 is an apocalyptic number.

It is an amenable number.

2156224828 is a deficient number, since it is larger than the sum of its proper divisors (1760649476).

2156224828 is a wasteful number, since it uses less digits than its factorization.

2156224828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188133 (or 188131 counting only the distinct ones).

The product of its digits is 122880, while the sum is 40.

The square root of 2156224828 is about 46435.1680087410. The cubic root of 2156224828 is about 1291.9072858224.

The spelling of 2156224828 in words is "two billion, one hundred fifty-six million, two hundred twenty-four thousand, eight hundred twenty-eight".