22642775 has 24 divisors (see below), whose sum is σ = 30005520. Its totient is φ = 16899840.

The previous prime is 22642729. The next prime is 22642831. The reversal of 22642775 is 57724622.

It is not a de Polignac number, because 22642775 - 2¹⁴ = 22626391 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34349 + ... + 35001.

It is an arithmetic number, because the mean of its divisors is an integer number (1250230).

Almost surely, 2^22642775 is an apocalyptic number.

22642775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22642775 is a deficient number, since it is larger than the sum of its proper divisors (7362745).

22642775 is a wasteful number, since it uses less digits than its factorization.

22642775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755 (or 750 counting only the distinct ones).

The product of its digits is 47040, while the sum is 35.

The square root of 22642775 is about 4758.4424972884. The cubic root of 22642775 is about 282.9066896774.

The spelling of 22642775 in words is "twenty-two million, six hundred forty-two thousand, seven hundred seventy-five".