23450520 has 64 divisors (see below), whose sum is σ = 71341920. Its totient is φ = 6165504.

The previous prime is 23450513. The next prime is 23450527. The reversal of 23450520 is 2505432.

It is an interprime number because it is at equal distance from previous prime (23450513) and next prime (23450527).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23450527) 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 15 ways as a sum of consecutive naturals, for example, 7422 + ... + 10098.

Almost surely, 2^23450520 is an apocalyptic number.

23450520 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 23450520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35670960).

23450520 is an abundant number, since it is smaller than the sum of its proper divisors (47891400).

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

23450520 is a wasteful number, since it uses less digits than its factorization.

23450520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764 (or 2760 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 23450520 is about 4842.5736958770. The cubic root of 23450520 is about 286.2315434665.

Adding to 23450520 its reverse (2505432), we get a palindrome (25955952).

The spelling of 23450520 in words is "twenty-three million, four hundred fifty thousand, five hundred twenty".