22156479 has 6 divisors (see below), whose sum is σ = 32003816. Its totient is φ = 14770980.

The previous prime is 22156469. The next prime is 22156487. The reversal of 22156479 is 97465122.

22156479 is a `hidden beast` number, since 2 + 2 + 1 + 5 + 647 + 9 = 666.

It is not a de Polignac number, because 22156479 - 2²¹ = 20059327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22156439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1230907 + ... + 1230924.

Almost surely, 2^22156479 is an apocalyptic number.

22156479 is a deficient number, since it is larger than the sum of its proper divisors (9847337).

22156479 is a wasteful number, since it uses less digits than its factorization.

22156479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461837 (or 2461834 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 22156479 is about 4707.0669211304. The cubic root of 22156479 is about 280.8666980017.

The spelling of 22156479 in words is "twenty-two million, one hundred fifty-six thousand, four hundred seventy-nine".