22242748 has 48 divisors (see below), whose sum is σ = 45803520. Its totient is φ = 9345600.

The previous prime is 22242721. The next prime is 22242757. The reversal of 22242748 is 84724222.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31018 + ... + 31726.

It is an arithmetic number, because the mean of its divisors is an integer number (954240).

Almost surely, 2^22242748 is an apocalyptic number.

It is an amenable number.

22242748 is an abundant number, since it is smaller than the sum of its proper divisors (23560772).

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

22242748 is a wasteful number, since it uses less digits than its factorization.

22242748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 776 counting only the distinct ones).

The product of its digits is 14336, while the sum is 31.

The square root of 22242748 is about 4716.2217929186. The cubic root of 22242748 is about 281.2307556874.

The spelling of 22242748 in words is "twenty-two million, two hundred forty-two thousand, seven hundred forty-eight".