23432540 has 24 divisors (see below), whose sum is σ = 50017632. Its totient is φ = 9218880.

The previous prime is 23432537. The next prime is 23432569. The reversal of 23432540 is 4523432.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8384 + ... + 10823.

It is an arithmetic number, because the mean of its divisors is an integer number (2084068).

Almost surely, 2^23432540 is an apocalyptic number.

23432540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23432540 is an abundant number, since it is smaller than the sum of its proper divisors (26585092).

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

23432540 is a wasteful number, since it uses less digits than its factorization.

23432540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19277 (or 19275 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 23432540 is about 4840.7168890568. The cubic root of 23432540 is about 286.1583715425.

Adding to 23432540 its reverse (4523432), we get a palindrome (27955972).

The spelling of 23432540 in words is "twenty-three million, four hundred thirty-two thousand, five hundred forty".