22290938 has 4 divisors (see below), whose sum is σ = 33436410. Its totient is φ = 11145468.

The previous prime is 22290929. The next prime is 22290943. The reversal of 22290938 is 83909222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20367169 + 1923769 = 4513^2 + 1387^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22290898 and 22290907.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5572733 + ... + 5572736.

Almost surely, 2^22290938 is an apocalyptic number.

22290938 is a deficient number, since it is larger than the sum of its proper divisors (11145472).

22290938 is a wasteful number, since it uses less digits than its factorization.

22290938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11145471.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 22290938 is about 4721.3279911483. The cubic root of 22290938 is about 281.4337092446.

The spelling of 22290938 in words is "twenty-two million, two hundred ninety thousand, nine hundred thirty-eight".