23015516 has 24 divisors (see below), whose sum is σ = 41779584. Its totient is φ = 11082240.

The previous prime is 23015497. The next prime is 23015519. The reversal of 23015516 is 61551032.

It is a junction number, because it is equal to n+sod(n) for n = 23015491 and 23015500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23015519) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 38516 + ... + 39108.

It is an arithmetic number, because the mean of its divisors is an integer number (1740816).

Almost surely, 2^23015516 is an apocalyptic number.

It is an amenable number.

23015516 is a deficient number, since it is larger than the sum of its proper divisors (18764068).

23015516 is a wasteful number, since it uses less digits than its factorization.

23015516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 23015516 is about 4797.4489054080. The cubic root of 23015516 is about 284.4506335233.

Adding to 23015516 its reverse (61551032), we get a palindrome (84566548).

The spelling of 23015516 in words is "twenty-three million, fifteen thousand, five hundred sixteen".