16486978 has 16 divisors (see below), whose sum is σ = 26221824. Its totient is φ = 7760880.

The previous prime is 16486969. The next prime is 16486979. The reversal of 16486978 is 87968461.

16486978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (16486979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1300 + ... + 5887.

It is an arithmetic number, because the mean of its divisors is an integer number (1638864).

Almost surely, 2^16486978 is an apocalyptic number.

16486978 is a deficient number, since it is larger than the sum of its proper divisors (9734846).

16486978 is a wasteful number, since it uses less digits than its factorization.

16486978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7257.

The product of its digits is 580608, while the sum is 49.

The square root of 16486978 is about 4060.4159885411. The cubic root of 16486978 is about 254.5151777455.

The spelling of 16486978 in words is "sixteen million, four hundred eighty-six thousand, nine hundred seventy-eight".