22399642 has 16 divisors (see below), whose sum is σ = 35819712. Its totient is φ = 10468800.

The previous prime is 22399607. The next prime is 22399667. The reversal of 22399642 is 24699322.

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 in 7 ways as a sum of consecutive naturals, for example, 2953 + ... + 7315.

It is an arithmetic number, because the mean of its divisors is an integer number (2238732).

Almost surely, 2^22399642 is an apocalyptic number.

22399642 is a deficient number, since it is larger than the sum of its proper divisors (13420070).

22399642 is a wasteful number, since it uses less digits than its factorization.

22399642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533.

The product of its digits is 46656, while the sum is 37.

The square root of 22399642 is about 4732.8260056757. The cubic root of 22399642 is about 281.8904475288.

It can be divided in two parts, 2239 and 9642, that added together give a square (11881 = 109²).

The spelling of 22399642 in words is "twenty-two million, three hundred ninety-nine thousand, six hundred forty-two".