23398992 has 30 divisors (see below), whose sum is σ = 65485082. Its totient is φ = 7799616.

The previous prime is 23398979. The next prime is 23398993. The reversal of 23398992 is 29989332.

It can be written as a sum of positive squares in only one way, i.e., 13133376 + 10265616 = 3624^2 + 3204^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23398993) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81103 + ... + 81390.

Almost surely, 2^23398992 is an apocalyptic number.

It is an amenable number.

23398992 is an abundant number, since it is smaller than the sum of its proper divisors (42086090).

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

23398992 is a wasteful number, since it uses less digits than its factorization.

23398992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162507 (or 162498 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 23398992 is about 4837.2504586800. The cubic root of 23398992 is about 286.0217435015.

It can be divided in two parts, 233 and 98992, that added together give a square (99225 = 315²).

The spelling of 23398992 in words is "twenty-three million, three hundred ninety-eight thousand, nine hundred ninety-two".