28630776 has 32 divisors (see below), whose sum is σ = 73244160. Its totient is φ = 9321312.

The previous prime is 28630769. The next prime is 28630783. The reversal of 28630776 is 67703682.

It is an interprime number because it is at equal distance from previous prime (28630769) and next prime (28630783).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12840 + ... + 14903.

It is an arithmetic number, because the mean of its divisors is an integer number (2288880).

Almost surely, 2^28630776 is an apocalyptic number.

It is an amenable number.

28630776 is an abundant number, since it is smaller than the sum of its proper divisors (44613384).

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

28630776 is a wasteful number, since it uses less digits than its factorization.

28630776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27795 (or 27791 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 28630776 is about 5350.7734020420. The cubic root of 28630776 is about 305.9222323629.

The spelling of 28630776 in words is "twenty-eight million, six hundred thirty thousand, seven hundred seventy-six".