23940385 has 16 divisors (see below), whose sum is σ = 32962176. Its totient is φ = 16351488.

The previous prime is 23940383. The next prime is 23940421. The reversal of 23940385 is 58304932.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23940385 - 2¹ = 23940383 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 23940385.

It is not an unprimeable number, because it can be changed into a prime (23940383) 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, 8697 + ... + 11113.

It is an arithmetic number, because the mean of its divisors is an integer number (2060136).

Almost surely, 2^23940385 is an apocalyptic number.

It is an amenable number.

23940385 is a deficient number, since it is larger than the sum of its proper divisors (9021791).

23940385 is a wasteful number, since it uses less digits than its factorization.

23940385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2712.

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

The square root of 23940385 is about 4892.8912720395. The cubic root of 23940385 is about 288.2108835155.

The spelling of 23940385 in words is "twenty-three million, nine hundred forty thousand, three hundred eighty-five".