22767138 has 24 divisors (see below), whose sum is σ = 49416588. Its totient is φ = 7575552.

The previous prime is 22767137. The next prime is 22767181. The reversal of 22767138 is 83176722.

It can be written as a sum of positive squares in 2 ways, for example, as 22724289 + 42849 = 4767^2 + 207^2 .

It is a super-2 number, since 2×22767138² = 1036685145422088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22767133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19170 + ... + 20322.

Almost surely, 2^22767138 is an apocalyptic number.

22767138 is an abundant number, since it is smaller than the sum of its proper divisors (26649450).

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

22767138 is a wasteful number, since it uses less digits than its factorization.

22767138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258 (or 2255 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 22767138 is about 4771.4922194215. The cubic root of 22767138 is about 283.4236891368.

The spelling of 22767138 in words is "twenty-two million, seven hundred sixty-seven thousand, one hundred thirty-eight".