28630768 has 20 divisors (see below), whose sum is σ = 57884688. Its totient is φ = 13692800.

The previous prime is 28630757. The next prime is 28630769. The reversal of 28630768 is 86703682.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28630768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28630769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38533 + ... + 39268.

Almost surely, 2^28630768 is an apocalyptic number.

It is an amenable number.

28630768 is an abundant number, since it is smaller than the sum of its proper divisors (29253920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28630768 is a wasteful number, since it uses less digits than its factorization.

28630768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77832 (or 77826 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 28630768 is about 5350.7726544865. The cubic root of 28630768 is about 305.9222038693.

The spelling of 28630768 in words is "twenty-eight million, six hundred thirty thousand, seven hundred sixty-eight".