22497774 has 16 divisors (see below), whose sum is σ = 48456912. Its totient is φ = 6922368.

The previous prime is 22497773. The next prime is 22497779. The reversal of 22497774 is 47779422.

It is a super-2 number, since 2×22497774² = 1012299669910152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22497773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144139 + ... + 144294.

It is an arithmetic number, because the mean of its divisors is an integer number (3028557).

Almost surely, 2^22497774 is an apocalyptic number.

22497774 is an abundant number, since it is smaller than the sum of its proper divisors (25959138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22497774 is a wasteful number, since it uses less digits than its factorization.

22497774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288451.

The product of its digits is 197568, while the sum is 42.

The square root of 22497774 is about 4743.1818434464. The cubic root of 22497774 is about 282.3014983742.

The spelling of 22497774 in words is "twenty-two million, four hundred ninety-seven thousand, seven hundred seventy-four".