22273538 has 12 divisors (see below), whose sum is σ = 38865222. Its totient is φ = 9545760.

The previous prime is 22273523. The next prime is 22273561. The reversal of 22273538 is 83537222.

It can be written as a sum of positive squares in only one way, i.e., 20133169 + 2140369 = 4487^2 + 1463^2 .

It is a super-2 number, since 2×22273538² = 992220990074888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113543 + ... + 113738.

Almost surely, 2^22273538 is an apocalyptic number.

22273538 is a deficient number, since it is larger than the sum of its proper divisors (16591684).

22273538 is a wasteful number, since it uses less digits than its factorization.

22273538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227297 (or 227290 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 22273538 is about 4719.4849295236. The cubic root of 22273538 is about 281.3604624203.

The spelling of 22273538 in words is "twenty-two million, two hundred seventy-three thousand, five hundred thirty-eight".