23963215 has 4 divisors (see below), whose sum is σ = 28755864. Its totient is φ = 19170568.

The previous prime is 23963213. The next prime is 23963231. The reversal of 23963215 is 51236932.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23963215 - 2¹ = 23963213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23963213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2396317 + ... + 2396326.

It is an arithmetic number, because the mean of its divisors is an integer number (7188966).

Almost surely, 2^23963215 is an apocalyptic number.

23963215 is a deficient number, since it is larger than the sum of its proper divisors (4792649).

23963215 is an equidigital number, since it uses as much as digits as its factorization.

23963215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4792648.

The product of its digits is 9720, while the sum is 31.

The square root of 23963215 is about 4895.2236925395. The cubic root of 23963215 is about 288.3024688433.

The spelling of 23963215 in words is "twenty-three million, nine hundred sixty-three thousand, two hundred fifteen".