23086840 has 48 divisors (see below), whose sum is σ = 60431400. Its totient is φ = 7914816.

The previous prime is 23086837. The next prime is 23086841. The reversal of 23086840 is 4868032.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23086841) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3930 + ... + 7849.

Almost surely, 2^23086840 is an apocalyptic number.

23086840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23086840 is an abundant number, since it is smaller than the sum of its proper divisors (37344560).

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

23086840 is a wasteful number, since it uses less digits than its factorization.

23086840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11804 (or 11793 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 23086840 is about 4804.8766893647. The cubic root of 23086840 is about 284.7441635582.

The spelling of 23086840 in words is "twenty-three million, eighty-six thousand, eight hundred forty".