23147215 has 16 divisors (see below), whose sum is σ = 34187328. Its totient is φ = 14651136.

The previous prime is 23147197. The next prime is 23147221. The reversal of 23147215 is 51274132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23147215 - 2¹¹ = 23145167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23147215.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24982 + ... + 25891.

It is an arithmetic number, because the mean of its divisors is an integer number (2136708).

Almost surely, 2^23147215 is an apocalyptic number.

23147215 is a deficient number, since it is larger than the sum of its proper divisors (11040113).

23147215 is a wasteful number, since it uses less digits than its factorization.

23147215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50898.

The product of its digits is 1680, while the sum is 25.

The square root of 23147215 is about 4811.1552666693. The cubic root of 23147215 is about 284.9921614752.

The spelling of 23147215 in words is "twenty-three million, one hundred forty-seven thousand, two hundred fifteen".