23840985 has 32 divisors (see below), whose sum is σ = 44531712. Its totient is φ = 10664640.

The previous prime is 23840981. The next prime is 23840989. The reversal of 23840985 is 58904832.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23840981) and next prime (23840989).

It is not a de Polignac number, because 23840985 - 2² = 23840981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23840981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2520 + ... + 7350.

It is an arithmetic number, because the mean of its divisors is an integer number (1391616).

Almost surely, 2^23840985 is an apocalyptic number.

It is an amenable number.

23840985 is a deficient number, since it is larger than the sum of its proper divisors (20690727).

23840985 is a wasteful number, since it uses less digits than its factorization.

23840985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4893.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 23840985 is about 4882.7231131818. The cubic root of 23840985 is about 287.8114482461.

The spelling of 23840985 in words is "twenty-three million, eight hundred forty thousand, nine hundred eighty-five".