23701920 has 144 divisors (see below), whose sum is σ = 82682208. Its totient is φ = 5660160.

The previous prime is 23701919. The next prime is 23701921. The reversal of 23701920 is 2910732.

It is an interprime number because it is at equal distance from previous prime (23701919) and next prime (23701921).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23701921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353727 + ... + 353793.

It is an arithmetic number, because the mean of its divisors is an integer number (574182).

Almost surely, 2^23701920 is an apocalyptic number.

23701920 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 23701920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41341104).

23701920 is an abundant number, since it is smaller than the sum of its proper divisors (58980288).

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

23701920 is a wasteful number, since it uses less digits than its factorization.

23701920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 88 counting only the distinct ones).

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

The square root of 23701920 is about 4868.4617693888. The cubic root of 23701920 is about 287.2507531030.

The spelling of 23701920 in words is "twenty-three million, seven hundred one thousand, nine hundred twenty".