23630509 has 16 divisors (see below), whose sum is σ = 28672000. Its totient is φ = 19023984.

The previous prime is 23630423. The next prime is 23630513. The reversal of 23630509 is 90503632.

It is not a de Polignac number, because 23630509 - 2¹¹ = 23628461 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23630539) 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, 16192 + ... + 17590.

It is an arithmetic number, because the mean of its divisors is an integer number (1792000).

Almost surely, 2^23630509 is an apocalyptic number.

It is an amenable number.

23630509 is a deficient number, since it is larger than the sum of its proper divisors (5041491).

23630509 is a wasteful number, since it uses less digits than its factorization.

23630509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 23630509 is about 4861.1221955429. The cubic root of 23630509 is about 286.9619790431.

The spelling of 23630509 in words is "twenty-three million, six hundred thirty thousand, five hundred nine".