23803720 has 16 divisors (see below), whose sum is σ = 53558460. Its totient is φ = 9521472.

The previous prime is 23803711. The next prime is 23803721. The reversal of 23803720 is 2730832.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23794884 + 8836 = 4878^2 + 94^2 .

It is not an unprimeable number, because it can be changed into a prime (23803721) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 297507 + ... + 297586.

Almost surely, 2^23803720 is an apocalyptic number.

23803720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23803720 is an abundant number, since it is smaller than the sum of its proper divisors (29754740).

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

23803720 is a wasteful number, since it uses less digits than its factorization.

23803720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595104 (or 595100 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 23803720 is about 4878.9056149920. The cubic root of 23803720 is about 287.6614140846.

The spelling of 23803720 in words is "twenty-three million, eight hundred three thousand, seven hundred twenty".