16417998 has 32 divisors (see below), whose sum is σ = 38073600. Its totient is φ = 5234328.

The previous prime is 16417997. The next prime is 16418009. The reversal of 16417998 is 89971461.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16417997) 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 15 ways as a sum of consecutive naturals, for example, 5368 + ... + 7851.

It is an arithmetic number, because the mean of its divisors is an integer number (1189800).

Almost surely, 2^16417998 is an apocalyptic number.

16417998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16417998 is an abundant number, since it is smaller than the sum of its proper divisors (21655602).

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

16417998 is a wasteful number, since it uses less digits than its factorization.

16417998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13253 (or 13247 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 16417998 is about 4051.9128815906. The cubic root of 16417998 is about 254.1597255234.

The spelling of 16417998 in words is "sixteen million, four hundred seventeen thousand, nine hundred ninety-eight".