28678683 has 16 divisors (see below), whose sum is σ = 41826816. Its totient is φ = 17334240.

The previous prime is 28678681. The next prime is 28678687. The reversal of 28678683 is 38687682.

It is a happy number.

It is not a de Polignac number, because 28678683 - 2¹ = 28678681 is a prime.

It is a super-2 number, since 2×28678683² = 1644933717228978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28678681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14341 + ... + 16217.

It is an arithmetic number, because the mean of its divisors is an integer number (2614176).

Almost surely, 2^28678683 is an apocalyptic number.

28678683 is a deficient number, since it is larger than the sum of its proper divisors (13148133).

28678683 is a wasteful number, since it uses less digits than its factorization.

28678683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354.

The product of its digits is 774144, while the sum is 48.

The square root of 28678683 is about 5355.2481735210. The cubic root of 28678683 is about 306.0927673797.

The spelling of 28678683 in words is "twenty-eight million, six hundred seventy-eight thousand, six hundred eighty-three".