23281092 has 72 divisors (see below), whose sum is σ = 63063000. Its totient is φ = 7216128.

The previous prime is 23281091. The next prime is 23281117. The reversal of 23281092 is 29018232.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11128896 + 12152196 = 3336^2 + 3486^2 .

It is not an unprimeable number, because it can be changed into a prime (23281091) 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 23 ways as a sum of consecutive naturals, for example, 66534 + ... + 66882.

It is an arithmetic number, because the mean of its divisors is an integer number (875875).

Almost surely, 2^23281092 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 23281092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31531500).

23281092 is an abundant number, since it is smaller than the sum of its proper divisors (39781908).

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

23281092 is a wasteful number, since it uses less digits than its factorization.

23281092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 23281092 is about 4825.0483935397. The cubic root of 23281092 is about 285.5405438458.

The spelling of 23281092 in words is "twenty-three million, two hundred eighty-one thousand, ninety-two".