23534520 has 64 divisors (see below), whose sum is σ = 73681920. Its totient is φ = 6002304.

The previous prime is 23534519. The next prime is 23534531. The reversal of 23534520 is 2543532.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1504 + ... + 7023.

It is an arithmetic number, because the mean of its divisors is an integer number (1151280).

Almost surely, 2^23534520 is an apocalyptic number.

23534520 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 23534520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36840960).

23534520 is an abundant number, since it is smaller than the sum of its proper divisors (50147400).

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

23534520 is a wasteful number, since it uses less digits than its factorization.

23534520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8564 (or 8560 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 23534520 is about 4851.2390169935. The cubic root of 23534520 is about 286.5728976410.

The spelling of 23534520 in words is "twenty-three million, five hundred thirty-four thousand, five hundred twenty".