22857938 has 4 divisors (see below), whose sum is σ = 34286910. Its totient is φ = 11428968.

The previous prime is 22857937. The next prime is 22857973. The reversal of 22857938 is 83975822.

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., 18601969 + 4255969 = 4313^2 + 2063^2 .

It is a super-2 number, since 2×22857938² = 1044970659223688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22857937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5714483 + ... + 5714486.

Almost surely, 2^22857938 is an apocalyptic number.

22857938 is a deficient number, since it is larger than the sum of its proper divisors (11428972).

22857938 is a wasteful number, since it uses less digits than its factorization.

22857938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11428971.

The product of its digits is 241920, while the sum is 44.

The square root of 22857938 is about 4780.9975946449. The cubic root of 22857938 is about 283.7999732149.

The spelling of 22857938 in words is "twenty-two million, eight hundred fifty-seven thousand, nine hundred thirty-eight".