22642871 has 2 divisors, whose sum is σ = 22642872. Its totient is φ = 22642870.

The previous prime is 22642831. The next prime is 22642877. The reversal of 22642871 is 17824622.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22642871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22642877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11321435 + 11321436.

It is an arithmetic number, because the mean of its divisors is an integer number (11321436).

Almost surely, 2^22642871 is an apocalyptic number.

22642871 is a deficient number, since it is larger than the sum of its proper divisors (1).

22642871 is an equidigital number, since it uses as much as digits as its factorization.

22642871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 32.

The square root of 22642871 is about 4758.4525846119. The cubic root of 22642871 is about 282.9070894960.

The spelling of 22642871 in words is "twenty-two million, six hundred forty-two thousand, eight hundred seventy-one".