23723120 has 40 divisors (see below), whose sum is σ = 57558816. Its totient is φ = 9075968.

The previous prime is 23723099. The next prime is 23723123. The reversal of 23723120 is 2132732.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23723092 and 23723101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23723123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4607 + ... + 8286.

Almost surely, 2^23723120 is an apocalyptic number.

23723120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23723120 is an abundant number, since it is smaller than the sum of its proper divisors (33835696).

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

23723120 is a wasteful number, since it uses less digits than its factorization.

23723120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12929 (or 12923 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 23723120 is about 4870.6385618315. The cubic root of 23723120 is about 287.3363706569.

Adding to 23723120 its reverse (2132732), we get a palindrome (25855852).

The spelling of 23723120 in words is "twenty-three million, seven hundred twenty-three thousand, one hundred twenty".