22492161 has 20 divisors (see below), whose sum is σ = 34081344. Its totient is φ = 14779800.

The previous prime is 22492159. The next prime is 22492177. The reversal of 22492161 is 16129422.

22492161 = T₃₀₃ + T₃₀₄ + ... + T₅₄₅.

It is not a de Polignac number, because 22492161 - 2¹ = 22492159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22492111) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3796 + ... + 7706.

Almost surely, 2^22492161 is an apocalyptic number.

It is an amenable number.

22492161 is a deficient number, since it is larger than the sum of its proper divisors (11589183).

22492161 is an equidigital number, since it uses as much as digits as its factorization.

22492161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994 (or 3985 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 22492161 is about 4742.5901151164. The cubic root of 22492161 is about 282.2780191608.

The spelling of 22492161 in words is "twenty-two million, four hundred ninety-two thousand, one hundred sixty-one".