23375220 has 96 divisors (see below), whose sum is σ = 72285696. Its totient is φ = 5596800.

The previous prime is 23375203. The next prime is 23375237. The reversal of 23375220 is 2257332.

It is an interprime number because it is at equal distance from previous prime (23375203) and next prime (23375237).

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 31 ways as a sum of consecutive naturals, for example, 70455 + ... + 70785.

It is an arithmetic number, because the mean of its divisors is an integer number (752976).

Almost surely, 2^23375220 is an apocalyptic number.

23375220 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 23375220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36142848).

23375220 is an abundant number, since it is smaller than the sum of its proper divisors (48910476).

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

23375220 is a wasteful number, since it uses less digits than its factorization.

23375220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 23375220 is about 4834.7926532583. The cubic root of 23375220 is about 285.9248502571.

It can be divided in two parts, 2337 and 5220, that added together give a palindrome (7557).

The spelling of 23375220 in words is "twenty-three million, three hundred seventy-five thousand, two hundred twenty".