22256671 has 4 divisors (see below), whose sum is σ = 22774312. Its totient is φ = 21739032.

The previous prime is 22256653. The next prime is 22256677. The reversal of 22256671 is 17665222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22256671 - 2⁵ = 22256639 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 (22256677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258756 + ... + 258841.

It is an arithmetic number, because the mean of its divisors is an integer number (5693578).

Almost surely, 2^22256671 is an apocalyptic number.

22256671 is a deficient number, since it is larger than the sum of its proper divisors (517641).

22256671 is an equidigital number, since it uses as much as digits as its factorization.

22256671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517640.

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

The square root of 22256671 is about 4717.6976376194. The cubic root of 22256671 is about 281.2894228853.

The spelling of 22256671 in words is "twenty-two million, two hundred fifty-six thousand, six hundred seventy-one".