23015016 has 48 divisors (see below), whose sum is σ = 64646400. Its totient is φ = 7671024.

The previous prime is 23015011. The next prime is 23015017. The reversal of 23015016 is 61051032.

It is a super-2 number, since 2×23015016² = 1059381922960512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 23015016.

It is not an unprimeable number, because it can be changed into a prime (23015011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3976 + ... + 7863.

It is an arithmetic number, because the mean of its divisors is an integer number (1346800).

Almost surely, 2^23015016 is an apocalyptic number.

It is an amenable number.

23015016 is an abundant number, since it is smaller than the sum of its proper divisors (41631384).

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

23015016 is a wasteful number, since it uses less digits than its factorization.

23015016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11860 (or 11844 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 23015016 is about 4797.3967940957. The cubic root of 23015016 is about 284.4485736615.

Adding to 23015016 its reverse (61051032), we get a palindrome (84066048).

The spelling of 23015016 in words is "twenty-three million, fifteen thousand, sixteen".