22571442 has 12 divisors (see below), whose sum is σ = 48904830. Its totient is φ = 7523808.

The previous prime is 22571413. The next prime is 22571467. The reversal of 22571442 is 24417522.

It can be written as a sum of positive squares in only one way, i.e., 16475481 + 6095961 = 4059^2 + 2469^2 .

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, 626967 + ... + 627002.

Almost surely, 2^22571442 is an apocalyptic number.

22571442 is an abundant number, since it is smaller than the sum of its proper divisors (26333388).

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

22571442 is a wasteful number, since it uses less digits than its factorization.

22571442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253977 (or 1253974 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 22571442 is about 4750.9411699157. The cubic root of 22571442 is about 282.6092907333.

Adding to 22571442 its reverse (24417522), we get a palindrome (46988964).

The spelling of 22571442 in words is "twenty-two million, five hundred seventy-one thousand, four hundred forty-two".