23281992 has 160 divisors (see below), whose sum is σ = 72019200. Its totient is φ = 6998400.

The previous prime is 23281981. The next prime is 23282029. The reversal of 23281992 is 29918232.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 381642 + ... + 381702.

It is an arithmetic number, because the mean of its divisors is an integer number (450120).

Almost surely, 2^23281992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23281992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36009600).

23281992 is an abundant number, since it is smaller than the sum of its proper divisors (48737208).

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

23281992 is a wasteful number, since it uses less digits than its factorization.

23281992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 116 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 23281992 is about 4825.1416559517. The cubic root of 23281992 is about 285.5442232720.

The spelling of 23281992 in words is "twenty-three million, two hundred eighty-one thousand, nine hundred ninety-two".