23971020 has 96 divisors (see below), whose sum is σ = 72285696. Its totient is φ = 5913600.

The previous prime is 23971009. The next prime is 23971043. The reversal of 23971020 is 2017932.

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, 72255 + ... + 72585.

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

Almost surely, 2^23971020 is an apocalyptic number.

23971020 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 23971020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36142848).

23971020 is an abundant number, since it is smaller than the sum of its proper divisors (48314676).

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

23971020 is a wasteful number, since it uses less digits than its factorization.

23971020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 23971020 is about 4896.0208332890. The cubic root of 23971020 is about 288.3337662090. Note that the first 3 decimals are identical.

Adding to 23971020 its reverse (2017932), we get a palindrome (25988952).

The spelling of 23971020 in words is "twenty-three million, nine hundred seventy-one thousand, twenty".