28678396 has 6 divisors (see below), whose sum is σ = 50187200. Its totient is φ = 14339196.

The previous prime is 28678387. The next prime is 28678399. The reversal of 28678396 is 69387682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28678399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3584796 + ... + 3584803.

Almost surely, 2^28678396 is an apocalyptic number.

It is an amenable number.

28678396 is a deficient number, since it is larger than the sum of its proper divisors (21508804).

28678396 is a wasteful number, since it uses less digits than its factorization.

28678396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7169603 (or 7169601 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

The square root of 28678396 is about 5355.2213773102. The cubic root of 28678396 is about 306.0917463086.

The spelling of 28678396 in words is "twenty-eight million, six hundred seventy-eight thousand, three hundred ninety-six".