22399668 has 36 divisors (see below), whose sum is σ = 56766528. Its totient is φ = 7447440.

The previous prime is 22399667. The next prime is 22399669. The reversal of 22399668 is 86699322.

It is an interprime number because it is at equal distance from previous prime (22399667) and next prime (22399669).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22399667) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 24133 + ... + 25043.

It is an arithmetic number, because the mean of its divisors is an integer number (1576848).

Almost surely, 2^22399668 is an apocalyptic number.

It is an amenable number.

22399668 is an abundant number, since it is smaller than the sum of its proper divisors (34366860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22399668 is a wasteful number, since it uses less digits than its factorization.

22399668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604 (or 1599 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 22399668 is about 4732.8287524482. The cubic root of 22399668 is about 281.8905565953.

The spelling of 22399668 in words is "twenty-two million, three hundred ninety-nine thousand, six hundred sixty-eight".