23529920 has 84 divisors (see below), whose sum is σ = 58994040. Its totient is φ = 8937984.

The previous prime is 23529889. The next prime is 23529953. The reversal of 23529920 is 2992532.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169211 + ... + 169349.

It is an arithmetic number, because the mean of its divisors is an integer number (702310).

Almost surely, 2^23529920 is an apocalyptic number.

23529920 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 23529920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29497020).

23529920 is an abundant number, since it is smaller than the sum of its proper divisors (35464120).

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

23529920 is a wasteful number, since it uses less digits than its factorization.

23529920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 23529920 is about 4850.7648881388. The cubic root of 23529920 is about 286.5542254774.

The spelling of 23529920 in words is "twenty-three million, five hundred twenty-nine thousand, nine hundred twenty".