22169457 has 10 divisors (see below), whose sum is σ = 33117458. Its totient is φ = 14779584.

The previous prime is 22169449. The next prime is 22169471. The reversal of 22169457 is 75496122.

It can be written as a sum of positive squares in only one way, i.e., 13024881 + 9144576 = 3609^2 + 3024^2 .

It is not a de Polignac number, because 22169457 - 2³ = 22169449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22169057) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 136768 + ... + 136929.

Almost surely, 2^22169457 is an apocalyptic number.

22169457 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

22169457 is a deficient number, since it is larger than the sum of its proper divisors (10948001).

22169457 is an equidigital number, since it uses as much as digits as its factorization.

22169457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273709 (or 273700 counting only the distinct ones).

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

The square root of 22169457 is about 4708.4452848047. The cubic root of 22169457 is about 280.9215258551.

The spelling of 22169457 in words is "twenty-two million, one hundred sixty-nine thousand, four hundred fifty-seven".