22442730 has 16 divisors (see below), whose sum is σ = 53862624. Its totient is φ = 5984720.

The previous prime is 22442713. The next prime is 22442731. The reversal of 22442730 is 3724422.

It is a super-2 number, since 2×22442730² = 1007352259705800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22442730.

It is not an unprimeable number, because it can be changed into a prime (22442731) 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, 374016 + ... + 374075.

It is an arithmetic number, because the mean of its divisors is an integer number (3366414).

Almost surely, 2^22442730 is an apocalyptic number.

22442730 is an abundant number, since it is smaller than the sum of its proper divisors (31419894).

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

22442730 is a wasteful number, since it uses less digits than its factorization.

22442730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748101.

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 22442730 is about 4737.3758558932. The cubic root of 22442730 is about 282.0710801155.

The spelling of 22442730 in words is "twenty-two million, four hundred forty-two thousand, seven hundred thirty".