23720851 has 16 divisors (see below), whose sum is σ = 30182400. Its totient is φ = 18480840.

The previous prime is 23720849. The next prime is 23720857. The reversal of 23720851 is 15802732.

It is not a de Polignac number, because 23720851 - 2¹ = 23720849 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23720857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 630 + ... + 6916.

It is an arithmetic number, because the mean of its divisors is an integer number (1886400).

Almost surely, 2^23720851 is an apocalyptic number.

23720851 is a deficient number, since it is larger than the sum of its proper divisors (6461549).

23720851 is an equidigital number, since it uses as much as digits as its factorization.

23720851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6319 (or 6305 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 23720851 is about 4870.4056299245. The cubic root of 23720851 is about 287.3272095936.

The spelling of 23720851 in words is "twenty-three million, seven hundred twenty thousand, eight hundred fifty-one".