23213250 has 128 divisors (see below), whose sum is σ = 68140800. Its totient is φ = 5832000.

The previous prime is 23213243. The next prime is 23213261. The reversal of 23213250 is 5231232.

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 polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 128160 + ... + 128340.

It is an arithmetic number, because the mean of its divisors is an integer number (532350).

Almost surely, 2^23213250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23213250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34070400).

23213250 is an abundant number, since it is smaller than the sum of its proper divisors (44927550).

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

23213250 is a wasteful number, since it uses less digits than its factorization.

23213250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 23213250 is about 4818.0130759474. The cubic root of 23213250 is about 285.2629152782.

Adding to 23213250 its reverse (5231232), we get a palindrome (28444482).

The spelling of 23213250 in words is "twenty-three million, two hundred thirteen thousand, two hundred fifty".