22399132 has 24 divisors (see below), whose sum is σ = 47434464. Its totient is φ = 9034752.

The previous prime is 22399129. The next prime is 22399141. The reversal of 22399132 is 23199322.

It is a happy number.

It is a super-2 number, since 2×22399132² = 1003442228706848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22399094 and 22399103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23053 + ... + 24004.

It is an arithmetic number, because the mean of its divisors is an integer number (1976436).

Almost surely, 2^22399132 is an apocalyptic number.

It is an amenable number.

22399132 is an abundant number, since it is smaller than the sum of its proper divisors (25035332).

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

22399132 is a wasteful number, since it uses less digits than its factorization.

22399132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47085 (or 47083 counting only the distinct ones).

The product of its digits is 5832, while the sum is 31.

The square root of 22399132 is about 4732.7721263547. The cubic root of 22399132 is about 281.8883081312. Note that the first 3 decimals are identical.

The spelling of 22399132 in words is "twenty-two million, three hundred ninety-nine thousand, one hundred thirty-two".