23671980 has 96 divisors (see below), whose sum is σ = 74995200. Its totient is φ = 6197184.

The previous prime is 23671969. The next prime is 23671981. The reversal of 23671980 is 8917632.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (23671981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31489 + ... + 32231.

It is an arithmetic number, because the mean of its divisors is an integer number (781200).

Almost surely, 2^23671980 is an apocalyptic number.

23671980 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 23671980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37497600).

23671980 is an abundant number, since it is smaller than the sum of its proper divisors (51323220).

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

23671980 is a wasteful number, since it uses less digits than its factorization.

23671980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 23671980 is about 4865.3859045301. The cubic root of 23671980 is about 287.1297514943.

The spelling of 23671980 in words is "twenty-three million, six hundred seventy-one thousand, nine hundred eighty".