22399605 has 32 divisors (see below), whose sum is σ = 40032000. Its totient is φ = 11883456.

The previous prime is 22399583. The next prime is 22399607. The reversal of 22399605 is 50699322.

It is not a de Polignac number, because 22399605 - 2¹⁰ = 22398581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22399605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22399607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37096 + ... + 37694.

It is an arithmetic number, because the mean of its divisors is an integer number (1251000).

Almost surely, 2^22399605 is an apocalyptic number.

It is an amenable number.

22399605 is a deficient number, since it is larger than the sum of its proper divisors (17632395).

22399605 is a wasteful number, since it uses less digits than its factorization.

22399605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 22399605 is about 4732.8220968044. The cubic root of 22399605 is about 281.8902923187.

The spelling of 22399605 in words is "twenty-two million, three hundred ninety-nine thousand, six hundred five".