23216539 has 8 divisors (see below), whose sum is σ = 23824368. Its totient is φ = 22616160.

The previous prime is 23216483. The next prime is 23216561. The reversal of 23216539 is 93561232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23216539 - 2⁷ = 23216411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23216539.

It is not an unprimeable number, because it can be changed into a prime (23216569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4749 + ... + 8305.

It is an arithmetic number, because the mean of its divisors is an integer number (2978046).

Almost surely, 2^23216539 is an apocalyptic number.

23216539 is a deficient number, since it is larger than the sum of its proper divisors (607829).

23216539 is a wasteful number, since it uses less digits than its factorization.

23216539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3725.

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

The square root of 23216539 is about 4818.3543871326. The cubic root of 23216539 is about 285.2763872597.

The spelling of 23216539 in words is "twenty-three million, two hundred sixteen thousand, five hundred thirty-nine".