16998408 has 96 divisors (see below), whose sum is σ = 54475200. Its totient is φ = 4685184.

The previous prime is 16998391. The next prime is 16998409. The reversal of 16998408 is 80489961.

It is not an unprimeable number, because it can be changed into a prime (16998409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14035 + ... + 15197.

It is an arithmetic number, because the mean of its divisors is an integer number (567450).

Almost surely, 2^16998408 is an apocalyptic number.

16998408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16998408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27237600).

16998408 is an abundant number, since it is smaller than the sum of its proper divisors (37476792).

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

16998408 is a wasteful number, since it uses less digits than its factorization.

16998408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211 (or 1204 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 16998408 is about 4122.9125627401. The cubic root of 16998408 is about 257.1201323833.

The spelling of 16998408 in words is "sixteen million, nine hundred ninety-eight thousand, four hundred eight".