16979850 has 72 divisors (see below), whose sum is σ = 46207980. Its totient is φ = 4469760.

The previous prime is 16979849. The next prime is 16979861. The reversal of 16979850 is 5897961.

It can be written as a sum of positive squares in 6 ways, for example, as 3606201 + 13373649 = 1899^2 + 3657^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 16979796 and 16979805.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 43456 + ... + 43844.

Almost surely, 2^16979850 is an apocalyptic number.

16979850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16979850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23103990).

16979850 is an abundant number, since it is smaller than the sum of its proper divisors (29228130).

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

16979850 is a wasteful number, since it uses less digits than its factorization.

16979850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 16979850 is about 4120.6613546857. The cubic root of 16979850 is about 257.0265280696.

The spelling of 16979850 in words is "sixteen million, nine hundred seventy-nine thousand, eight hundred fifty".