16872018 has 32 divisors (see below), whose sum is σ = 35582976. Its totient is φ = 5322768.

The previous prime is 16872017. The next prime is 16872047. The reversal of 16872018 is 81027861.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 16872018.

It is not an unprimeable number, because it can be changed into a prime (16872017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13621 + ... + 14807.

It is an arithmetic number, because the mean of its divisors is an integer number (1111968).

Almost surely, 2^16872018 is an apocalyptic number.

16872018 is an abundant number, since it is smaller than the sum of its proper divisors (18710958).

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

16872018 is a wasteful number, since it uses less digits than its factorization.

16872018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 16872018 is about 4107.5562077712. The cubic root of 16872018 is about 256.4812825240.

Adding to 16872018 its reverse (81027861), we get a palindrome (97899879).

The spelling of 16872018 in words is "sixteen million, eight hundred seventy-two thousand, eighteen".