23990670 has 72 divisors (see below), whose sum is σ = 68592888. Its totient is φ = 5813280.

The previous prime is 23990669. The next prime is 23990671. The reversal of 23990670 is 7609932.

It is an interprime number because it is at equal distance from previous prime (23990669) and next prime (23990671).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23990671) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9789 + ... + 11991.

It is an arithmetic number, because the mean of its divisors is an integer number (952679).

Almost surely, 2^23990670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23990670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34296444).

23990670 is an abundant number, since it is smaller than the sum of its proper divisors (44602218).

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

23990670 is a wasteful number, since it uses less digits than its factorization.

23990670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238 (or 2224 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 23990670 is about 4898.0271538651. The cubic root of 23990670 is about 288.4125309155.

It can be divided in two parts, 239 and 90670, that added together give a palindrome (90909).

The spelling of 23990670 in words is "twenty-three million, nine hundred ninety thousand, six hundred seventy".