23585520 has 160 divisors (see below), whose sum is σ = 84994560. Its totient is φ = 5299200.

The previous prime is 23585519. The next prime is 23585581. The reversal of 23585520 is 2558532.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169611 + ... + 169749.

It is an arithmetic number, because the mean of its divisors is an integer number (531216).

Almost surely, 2^23585520 is an apocalyptic number.

23585520 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 23585520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42497280).

23585520 is an abundant number, since it is smaller than the sum of its proper divisors (61409040).

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

23585520 is a wasteful number, since it uses less digits than its factorization.

23585520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 23585520 is about 4856.4925615098. The cubic root of 23585520 is about 286.7797522708.

The spelling of 23585520 in words is "twenty-three million, five hundred eighty-five thousand, five hundred twenty".