16049978 has 16 divisors (see below), whose sum is σ = 27591360. Its totient is φ = 6859296.

The previous prime is 16049951. The next prime is 16049981. The reversal of 16049978 is 87994061.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4325 + ... + 7127.

It is an arithmetic number, because the mean of its divisors is an integer number (1724460).

Almost surely, 2^16049978 is an apocalyptic number.

16049978 is a deficient number, since it is larger than the sum of its proper divisors (11541382).

16049978 is a wasteful number, since it uses less digits than its factorization.

16049978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 16049978 is about 4006.2423790879. The cubic root of 16049978 is about 252.2463053315.

The spelling of 16049978 in words is "sixteen million, forty-nine thousand, nine hundred seventy-eight".