22571422 has 4 divisors (see below), whose sum is σ = 33857136. Its totient is φ = 11285710.

The previous prime is 22571413. The next prime is 22571467. The reversal of 22571422 is 22417522.

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

It is a super-2 number, since 2×22571422² = 1018938182204168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5642854 + ... + 5642857.

It is an arithmetic number, because the mean of its divisors is an integer number (8464284).

Almost surely, 2^22571422 is an apocalyptic number.

22571422 is a deficient number, since it is larger than the sum of its proper divisors (11285714).

22571422 is a wasteful number, since it uses less digits than its factorization.

22571422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11285713.

The product of its digits is 2240, while the sum is 25.

The square root of 22571422 is about 4750.9390650691. The cubic root of 22571422 is about 282.6092072623.

Adding to 22571422 its reverse (22417522), we get a palindrome (44988944).

The spelling of 22571422 in words is "twenty-two million, five hundred seventy-one thousand, four hundred twenty-two".