17989428 has 24 divisors (see below), whose sum is σ = 44185120. Its totient is φ = 5680800.

The previous prime is 17989403. The next prime is 17989441. The reversal of 17989428 is 82498971.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 39223 + ... + 39678.

Almost surely, 2^17989428 is an apocalyptic number.

It is an amenable number.

17989428 is an abundant number, since it is smaller than the sum of its proper divisors (26195692).

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

17989428 is a wasteful number, since it uses less digits than its factorization.

17989428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78927 (or 78925 counting only the distinct ones).

The product of its digits is 290304, while the sum is 48.

The square root of 17989428 is about 4241.3945819742. The cubic root of 17989428 is about 262.0228210800.

The spelling of 17989428 in words is "seventeen million, nine hundred eighty-nine thousand, four hundred twenty-eight".