23015200 has 72 divisors (see below), whose sum is σ = 60535188. Its totient is φ = 8494080.

The previous prime is 23015159. The next prime is 23015207. The reversal of 23015200 is 251032.

It can be written as a sum of positive squares in 6 ways, for example, as 11806096 + 11209104 = 3436^2 + 3348^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (23015207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9294 + ... + 11506.

Almost surely, 2^23015200 is an apocalyptic number.

23015200 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 23015200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30267594).

23015200 is an abundant number, since it is smaller than the sum of its proper divisors (37519988).

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

23015200 is a wasteful number, since it uses less digits than its factorization.

23015200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246 (or 2233 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 23015200 is about 4797.4159711245. The cubic root of 23015200 is about 284.4493316941.

Adding to 23015200 its reverse (251032), we get a palindrome (23266232).

The spelling of 23015200 in words is "twenty-three million, fifteen thousand, two hundred".