23720485 has 4 divisors (see below), whose sum is σ = 28464588. Its totient is φ = 18976384.

The previous prime is 23720467. The next prime is 23720497. The reversal of 23720485 is 58402732.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11512449 + 12208036 = 3393^2 + 3494^2 .

It is a cyclic number.

It is not a de Polignac number, because 23720485 - 2¹¹ = 23718437 is a prime.

It is a super-2 number, since 2×23720485² = 1125322817270450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2372044 + ... + 2372053.

It is an arithmetic number, because the mean of its divisors is an integer number (7116147).

Almost surely, 2^23720485 is an apocalyptic number.

It is an amenable number.

23720485 is a deficient number, since it is larger than the sum of its proper divisors (4744103).

23720485 is an equidigital number, since it uses as much as digits as its factorization.

23720485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4744102.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 23720485 is about 4870.3680559071. The cubic root of 23720485 is about 287.3257318178.

The spelling of 23720485 in words is "twenty-three million, seven hundred twenty thousand, four hundred eighty-five".