23507880 has 96 divisors (see below), whose sum is σ = 77565600. Its totient is φ = 5695360.

The previous prime is 23507873. The next prime is 23507881. The reversal of 23507880 is 8870532.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23507881) 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 23 ways as a sum of consecutive naturals, for example, 13711 + ... + 15329.

It is an arithmetic number, because the mean of its divisors is an integer number (807975).

Almost surely, 2^23507880 is an apocalyptic number.

23507880 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 23507880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38782800).

23507880 is an abundant number, since it is smaller than the sum of its proper divisors (54057720).

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

23507880 is a wasteful number, since it uses less digits than its factorization.

23507880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655 (or 1640 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 23507880 is about 4848.4925492363. The cubic root of 23507880 is about 286.4647276795.

The spelling of 23507880 in words is "twenty-three million, five hundred seven thousand, eight hundred eighty".