22642906 has 32 divisors (see below), whose sum is σ = 40896576. Its totient is φ = 9264000.

The previous prime is 22642891. The next prime is 22642909. The reversal of 22642906 is 60924622.

It is not an unprimeable number, because it can be changed into a prime (22642909) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10761 + ... + 12691.

It is an arithmetic number, because the mean of its divisors is an integer number (1278018).

Almost surely, 2^22642906 is an apocalyptic number.

22642906 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22642906 is a deficient number, since it is larger than the sum of its proper divisors (18253670).

22642906 is a wasteful number, since it uses less digits than its factorization.

22642906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 22642906 is about 4758.4562622767. The cubic root of 22642906 is about 282.9072352629.

The spelling of 22642906 in words is "twenty-two million, six hundred forty-two thousand, nine hundred six".