16998428 has 12 divisors (see below), whose sum is σ = 29800512. Its totient is φ = 8484000.

The previous prime is 16998409. The next prime is 16998439. The reversal of 16998428 is 82489961.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073 + ... + 5928.

It is an arithmetic number, because the mean of its divisors is an integer number (2483376).

Almost surely, 2^16998428 is an apocalyptic number.

It is an amenable number.

16998428 is a deficient number, since it is larger than the sum of its proper divisors (12802084).

16998428 is a wasteful number, since it uses less digits than its factorization.

16998428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7612 (or 7610 counting only the distinct ones).

The product of its digits is 248832, while the sum is 47.

The square root of 16998428 is about 4122.9149882092. The cubic root of 16998428 is about 257.1202332241.

The spelling of 16998428 in words is "sixteen million, nine hundred ninety-eight thousand, four hundred twenty-eight".