16979340 has 48 divisors (see below), whose sum is σ = 54335232. Its totient is φ = 3880896.

The previous prime is 16979329. The next prime is 16979353. The reversal of 16979340 is 4397961.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19794 + ... + 20633.

It is an arithmetic number, because the mean of its divisors is an integer number (1131984).

Almost surely, 2^16979340 is an apocalyptic number.

16979340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16979340 is an abundant number, since it is smaller than the sum of its proper divisors (37355892).

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

16979340 is a wasteful number, since it uses less digits than its factorization.

16979340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40446 (or 40444 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 16979340 is about 4120.5994709508. The cubic root of 16979340 is about 257.0239547284.

The spelling of 16979340 in words is "sixteen million, nine hundred seventy-nine thousand, three hundred forty".