23249665 has 16 divisors (see below), whose sum is σ = 29828736. Its totient is φ = 17353600.

The previous prime is 23249663. The next prime is 23249687. The reversal of 23249665 is 56694232.

It is not a de Polignac number, because 23249665 - 2¹ = 23249663 is a prime.

It is a super-2 number, since 2×23249665² = 1081093845224450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23249663) 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, 2250 + ... + 7180.

It is an arithmetic number, because the mean of its divisors is an integer number (1864296).

Almost surely, 2^23249665 is an apocalyptic number.

It is an amenable number.

23249665 is a deficient number, since it is larger than the sum of its proper divisors (6579071).

23249665 is a wasteful number, since it uses less digits than its factorization.

23249665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000.

The product of its digits is 77760, while the sum is 37.

The square root of 23249665 is about 4821.7906424896. The cubic root of 23249665 is about 285.4120028601.

The spelling of 23249665 in words is "twenty-three million, two hundred forty-nine thousand, six hundred sixty-five".