16979928 has 64 divisors (see below), whose sum is σ = 49455360. Its totient is φ = 4757376.

The previous prime is 16979903. The next prime is 16979933. The reversal of 16979928 is 82997961.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7951 + ... + 9857.

It is an arithmetic number, because the mean of its divisors is an integer number (772740).

Almost surely, 2^16979928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16979928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24727680).

16979928 is an abundant number, since it is smaller than the sum of its proper divisors (32475432).

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

16979928 is a wasteful number, since it uses less digits than its factorization.

16979928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976 (or 1972 counting only the distinct ones).

The product of its digits is 489888, while the sum is 51.

The square root of 16979928 is about 4120.6708191750. The cubic root of 16979928 is about 257.0269216348.

The spelling of 16979928 in words is "sixteen million, nine hundred seventy-nine thousand, nine hundred twenty-eight".