16880978 has 8 divisors (see below), whose sum is σ = 25357440. Its totient is φ = 8428500.

The previous prime is 16880959. The next prime is 16880993. The reversal of 16880978 is 87908861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon 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, 4118 + ... + 7121.

It is an arithmetic number, because the mean of its divisors is an integer number (3169680).

Almost surely, 2^16880978 is an apocalyptic number.

16880978 is a deficient number, since it is larger than the sum of its proper divisors (8476462).

16880978 is a wasteful number, since it uses less digits than its factorization.

16880978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11992.

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 16880978 is about 4108.6467358487. The cubic root of 16880978 is about 256.5266765330.

The spelling of 16880978 in words is "sixteen million, eight hundred eighty thousand, nine hundred seventy-eight".