23215506 has 16 divisors (see below), whose sum is σ = 49162464. Its totient is φ = 7283264.

The previous prime is 23215501. The next prime is 23215513. The reversal of 23215506 is 60551232.

It is not an unprimeable number, because it can be changed into a prime (23215501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113700 + ... + 113903.

It is an arithmetic number, because the mean of its divisors is an integer number (3072654).

Almost surely, 2^23215506 is an apocalyptic number.

23215506 is an abundant number, since it is smaller than the sum of its proper divisors (25946958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23215506 is a wasteful number, since it uses less digits than its factorization.

23215506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227625.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 23215506 is about 4818.2471916663. The cubic root of 23215506 is about 285.2721561542.

Adding to 23215506 its reverse (60551232), we get a palindrome (83766738).

The spelling of 23215506 in words is "twenty-three million, two hundred fifteen thousand, five hundred six".