22891424 has 12 divisors (see below), whose sum is σ = 45067554. Its totient is φ = 11445696.

The previous prime is 22891387. The next prime is 22891433. The reversal of 22891424 is 42419822.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19891600 + 2999824 = 4460^2 + 1732^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 715357 = 22891424 / (2 + 2 + 8 + 9 + 1 + 4 + 2 + 4).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357647 + ... + 357710.

Almost surely, 2^22891424 is an apocalyptic number.

It is an amenable number.

22891424 is a deficient number, since it is larger than the sum of its proper divisors (22176130).

22891424 is an equidigital number, since it uses as much as digits as its factorization.

22891424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715367 (or 715359 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 22891424 is about 4784.4983018076. The cubic root of 22891424 is about 283.9384909443.

The spelling of 22891424 in words is "twenty-two million, eight hundred ninety-one thousand, four hundred twenty-four".