22570942 has 4 divisors (see below), whose sum is σ = 33856416. Its totient is φ = 11285470.

The previous prime is 22570939. The next prime is 22570949. The reversal of 22570942 is 24907522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24907522 = 2 ⋅12453761.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22570949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5642734 + ... + 5642737.

It is an arithmetic number, because the mean of its divisors is an integer number (8464104).

Almost surely, 2^22570942 is an apocalyptic number.

22570942 is a deficient number, since it is larger than the sum of its proper divisors (11285474).

22570942 is a wasteful number, since it uses less digits than its factorization.

22570942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11285473.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 22570942 is about 4750.8885484717. Note that the first 3 decimals coincide. The cubic root of 22570942 is about 282.6072039417.

The spelling of 22570942 in words is "twenty-two million, five hundred seventy thousand, nine hundred forty-two".