23009637 has 16 divisors (see below), whose sum is σ = 36587520. Its totient is φ = 12576432.

The previous prime is 23009633. The next prime is 23009659. The reversal of 23009637 is 73690032.

It is a happy number.

It is not a de Polignac number, because 23009637 - 2² = 23009633 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23009633) 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, 23337 + ... + 24302.

It is an arithmetic number, because the mean of its divisors is an integer number (2286720).

Almost surely, 2^23009637 is an apocalyptic number.

It is an amenable number.

23009637 is a deficient number, since it is larger than the sum of its proper divisors (13577883).

23009637 is a wasteful number, since it uses less digits than its factorization.

23009637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47672.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 23009637 is about 4796.8361447938. The cubic root of 23009637 is about 284.4264117811.

Adding to 23009637 its reverse (73690032), we get a palindrome (96699669).

The spelling of 23009637 in words is "twenty-three million, nine thousand, six hundred thirty-seven".