22642851 has 72 divisors (see below), whose sum is σ = 41240640. Its totient is φ = 10977120.

The previous prime is 22642831. The next prime is 22642871. The reversal of 22642851 is 15824622.

It is an interprime number because it is at equal distance from previous prime (22642831) and next prime (22642871).

It is not a de Polignac number, because 22642851 - 2⁷ = 22642723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22642831) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 337920 + ... + 337986.

Almost surely, 2^22642851 is an apocalyptic number.

22642851 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22642851 is a deficient number, since it is larger than the sum of its proper divisors (18597789).

22642851 is a wasteful number, since it uses less digits than its factorization.

22642851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 107 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 22642851 is about 4758.4504830880. The cubic root of 22642851 is about 282.9070062005.

It can be divided in two parts, 2264 and 2851, that added together give a palindrome (5115).

The spelling of 22642851 in words is "twenty-two million, six hundred forty-two thousand, eight hundred fifty-one".