23040432 has 90 divisors (see below), whose sum is σ = 67080156. Its totient is φ = 7378560.

The previous prime is 23040431. The next prime is 23040439. The reversal of 23040432 is 23404032.

23040432 is a `hidden beast` number, since 230 + 4 + 0 + 432 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (23040431) 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 17 ways as a sum of consecutive naturals, for example, 377682 + ... + 377742.

Almost surely, 2^23040432 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 23040432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33540078).

23040432 is an abundant number, since it is smaller than the sum of its proper divisors (44039724).

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

23040432 is a wasteful number, since it uses less digits than its factorization.

23040432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 23040432 is about 4800.0449997891. The cubic root of 23040432 is about 284.5532427947.

Adding to 23040432 its reverse (23404032), we get a palindrome (46444464).

The spelling of 23040432 in words is "twenty-three million, forty thousand, four hundred thirty-two".