23066520 has 64 divisors (see below), whose sum is σ = 69603840. Its totient is φ = 6115200.

The previous prime is 23066507. The next prime is 23066557. The reversal of 23066520 is 2566032.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24865 + ... + 25775.

It is an arithmetic number, because the mean of its divisors is an integer number (1087560).

Almost surely, 2^23066520 is an apocalyptic number.

23066520 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 23066520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34801920).

23066520 is an abundant number, since it is smaller than the sum of its proper divisors (46537320).

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

23066520 is a wasteful number, since it uses less digits than its factorization.

23066520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 23066520 is about 4802.7617055190. The cubic root of 23066520 is about 284.6605993609.

The spelling of 23066520 in words is "twenty-three million, sixty-six thousand, five hundred twenty".