23012550 has 72 divisors (see below), whose sum is σ = 67462200. Its totient is φ = 5577600.

The previous prime is 23012533. The next prime is 23012599. The reversal of 23012550 is 5521032.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 2626 + ... + 7274.

It is an arithmetic number, because the mean of its divisors is an integer number (936975).

Almost surely, 2^23012550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23012550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33731100).

23012550 is an abundant number, since it is smaller than the sum of its proper divisors (44449650).

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

23012550 is a wasteful number, since it uses less digits than its factorization.

23012550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4678 (or 4670 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 23012550 is about 4797.1397728230. The cubic root of 23012550 is about 284.4384139866.

Adding to 23012550 its reverse (5521032), we get a palindrome (28533582).

It can be divided in two parts, 2301 and 2550, that added together give a triangular number (4851 = T₉₈).

The spelling of 23012550 in words is "twenty-three million, twelve thousand, five hundred fifty".