23440285 has 16 divisors (see below), whose sum is σ = 31148352. Its totient is φ = 16790400.

The previous prime is 23440283. The next prime is 23440321. The reversal of 23440285 is 58204432.

It is not a de Polignac number, because 23440285 - 2¹ = 23440283 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 (23440283) 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, 505 + ... + 6865.

It is an arithmetic number, because the mean of its divisors is an integer number (1946772).

Almost surely, 2^23440285 is an apocalyptic number.

It is an amenable number.

23440285 is a deficient number, since it is larger than the sum of its proper divisors (7708067).

23440285 is a wasteful number, since it uses less digits than its factorization.

23440285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6444.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 23440285 is about 4841.5168077783. The cubic root of 23440285 is about 286.1898954042.

The spelling of 23440285 in words is "twenty-three million, four hundred forty thousand, two hundred eighty-five".