22156627 has 4 divisors (see below), whose sum is σ = 23459976. Its totient is φ = 20853280.

The previous prime is 22156619. The next prime is 22156637. The reversal of 22156627 is 72665122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72665122 = 2 ⋅36332561.

It is a cyclic number.

It is not a de Polignac number, because 22156627 - 2³ = 22156619 is a prime.

It is a super-2 number, since 2×22156627² = 981832240034258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22156637) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 651649 + ... + 651682.

It is an arithmetic number, because the mean of its divisors is an integer number (5864994).

Almost surely, 2^22156627 is an apocalyptic number.

22156627 is a deficient number, since it is larger than the sum of its proper divisors (1303349).

22156627 is a wasteful number, since it uses less digits than its factorization.

22156627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303348.

The product of its digits is 10080, while the sum is 31.

The square root of 22156627 is about 4707.0826421468. The cubic root of 22156627 is about 280.8673233745.

The spelling of 22156627 in words is "twenty-two million, one hundred fifty-six thousand, six hundred twenty-seven".