22733138 has 8 divisors (see below), whose sum is σ = 34122060. Its totient is φ = 11359120.

The previous prime is 22733099. The next prime is 22733143. The reversal of 22733138 is 83133722.

It can be written as a sum of positive squares in 2 ways, for example, as 22591009 + 142129 = 4753^2 + 377^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 22733138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1628 + ... + 6936.

Almost surely, 2^22733138 is an apocalyptic number.

22733138 is a deficient number, since it is larger than the sum of its proper divisors (11388922).

22733138 is a wasteful number, since it uses less digits than its factorization.

22733138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7452.

The product of its digits is 6048, while the sum is 29.

The square root of 22733138 is about 4767.9280615378. The cubic root of 22733138 is about 283.2825323761.

The spelling of 22733138 in words is "twenty-two million, seven hundred thirty-three thousand, one hundred thirty-eight".