23432840 has 64 divisors (see below), whose sum is σ = 55157760. Its totient is φ = 8951040.

The previous prime is 23432839. The next prime is 23432863. The reversal of 23432840 is 4823432.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104969 + ... + 105191.

It is an arithmetic number, because the mean of its divisors is an integer number (861840).

Almost surely, 2^23432840 is an apocalyptic number.

23432840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23432840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27578880).

23432840 is an abundant number, since it is smaller than the sum of its proper divisors (31724920).

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

23432840 is a wasteful number, since it uses less digits than its factorization.

23432840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 23432840 is about 4840.7478761034. The cubic root of 23432840 is about 286.1595927381.

The spelling of 23432840 in words is "twenty-three million, four hundred thirty-two thousand, eight hundred forty".