23961980 has 60 divisors (see below), whose sum is σ = 58821000. Its totient is φ = 8199072.

The previous prime is 23961967. The next prime is 23961997. The reversal of 23961980 is 8916932.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47771 + ... + 48269.

It is an arithmetic number, because the mean of its divisors is an integer number (980350).

Almost surely, 2^23961980 is an apocalyptic number.

23961980 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 23961980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29410500).

23961980 is an abundant number, since it is smaller than the sum of its proper divisors (34859020).

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

23961980 is an equidigital number, since it uses as much as digits as its factorization.

23961980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 23961980 is about 4895.0975475469. The cubic root of 23961980 is about 288.2975159789.

The spelling of 23961980 in words is "twenty-three million, nine hundred sixty-one thousand, nine hundred eighty".