23326540 has 24 divisors (see below), whose sum is σ = 50182272. Its totient is φ = 9102720.

The previous prime is 23326507. The next prime is 23326549. The reversal of 23326540 is 4562332.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23326549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13404 + ... + 15043.

It is an arithmetic number, because the mean of its divisors is an integer number (2090928).

Almost surely, 2^23326540 is an apocalyptic number.

23326540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23326540 is an abundant number, since it is smaller than the sum of its proper divisors (26855732).

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

23326540 is a wasteful number, since it uses less digits than its factorization.

23326540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28497 (or 28495 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 23326540 is about 4829.7556874028. The cubic root of 23326540 is about 285.7262283103.

Adding to 23326540 its reverse (4562332), we get a palindrome (27888872).

The spelling of 23326540 in words is "twenty-three million, three hundred twenty-six thousand, five hundred forty".