22115464 has 24 divisors (see below), whose sum is σ = 48237390. Its totient is φ = 9477888.

The previous prime is 22115461. The next prime is 22115473. The reversal of 22115464 is 46451122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17994564 + 4120900 = 4242^2 + 2030^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22115461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27817 + ... + 28600.

Almost surely, 2^22115464 is an apocalyptic number.

It is an amenable number.

22115464 is an abundant number, since it is smaller than the sum of its proper divisors (26121926).

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

22115464 is a wasteful number, since it uses less digits than its factorization.

22115464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56437 (or 56426 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 22115464 is about 4702.7081559459. The cubic root of 22115464 is about 280.6932820120.

Adding to 22115464 its reverse (46451122), we get a palindrome (68566586).

The spelling of 22115464 in words is "twenty-two million, one hundred fifteen thousand, four hundred sixty-four".