23152520 has 64 divisors (see below), whose sum is σ = 54198720. Its totient is φ = 8895744.

The previous prime is 23152477. The next prime is 23152523. The reversal of 23152520 is 2525132.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23152492 and 23152501.

It is not an unprimeable number, because it can be changed into a prime (23152523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141959 + ... + 142121.

It is an arithmetic number, because the mean of its divisors is an integer number (846855).

Almost surely, 2^23152520 is an apocalyptic number.

23152520 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 23152520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27099360).

23152520 is an abundant number, since it is smaller than the sum of its proper divisors (31046200).

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

23152520 is a wasteful number, since it uses less digits than its factorization.

23152520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 23152520 is about 4811.7065579688. The cubic root of 23152520 is about 285.0139318110.

Adding to 23152520 its reverse (2525132), we get a palindrome (25677652).

The spelling of 23152520 in words is "twenty-three million, one hundred fifty-two thousand, five hundred twenty".