23403985 has 16 divisors (see below), whose sum is σ = 32441472. Its totient is φ = 16019200.

The previous prime is 23403983. The next prime is 23404001. The reversal of 23403985 is 58930432.

It is a happy number.

It is not a de Polignac number, because 23403985 - 2¹ = 23403983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23403985.

It is not an unprimeable number, because it can be changed into a prime (23403983) 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 15 ways as a sum of consecutive naturals, for example, 11581 + ... + 13450.

It is an arithmetic number, because the mean of its divisors is an integer number (2027592).

Almost surely, 2^23403985 is an apocalyptic number.

It is an amenable number.

23403985 is a deficient number, since it is larger than the sum of its proper divisors (9037487).

23403985 is a wasteful number, since it uses less digits than its factorization.

23403985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25064.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 23403985 is about 4837.7665301252. The cubic root of 23403985 is about 286.0420863293.

The spelling of 23403985 in words is "twenty-three million, four hundred three thousand, nine hundred eighty-five".