22042938 has 16 divisors (see below), whose sum is σ = 44187840. Its totient is φ = 7330656.

The previous prime is 22042919. The next prime is 22042939. The reversal of 22042938 is 83924022.

It is a super-2 number, since 2×22042938² = 971782231343688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22042939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1278 + ... + 6761.

It is an arithmetic number, because the mean of its divisors is an integer number (2761740).

Almost surely, 2^22042938 is an apocalyptic number.

22042938 is an abundant number, since it is smaller than the sum of its proper divisors (22144902).

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

22042938 is a wasteful number, since it uses less digits than its factorization.

22042938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8501.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 22042938 is about 4694.9907348151. The cubic root of 22042938 is about 280.3861084840.

The spelling of 22042938 in words is "twenty-two million, forty-two thousand, nine hundred thirty-eight".