28676978 has 8 divisors (see below), whose sum is σ = 46926000. Its totient is φ = 13034980.

The previous prime is 28676959. The next prime is 28676993. The reversal of 28676978 is 87967682.

It is a happy number.

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

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, 651728 + ... + 651771.

It is an arithmetic number, because the mean of its divisors is an integer number (5865750).

Almost surely, 2^28676978 is an apocalyptic number.

28676978 is a deficient number, since it is larger than the sum of its proper divisors (18249022).

28676978 is a wasteful number, since it uses less digits than its factorization.

28676978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303512.

The product of its digits is 2032128, while the sum is 53.

The square root of 28676978 is about 5355.0889815203. The cubic root of 28676978 is about 306.0867013351.

The spelling of 28676978 in words is "twenty-eight million, six hundred seventy-six thousand, nine hundred seventy-eight".