28763286 has 16 divisors (see below), whose sum is σ = 60910704. Its totient is φ = 9023744.

The previous prime is 28763279. The next prime is 28763291. The reversal of 28763286 is 68236782.

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, 140895 + ... + 141098.

It is an arithmetic number, because the mean of its divisors is an integer number (3806919).

Almost surely, 2^28763286 is an apocalyptic number.

28763286 is an abundant number, since it is smaller than the sum of its proper divisors (32147418).

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

28763286 is a wasteful number, since it uses less digits than its factorization.

28763286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282015.

The product of its digits is 193536, while the sum is 42.

The square root of 28763286 is about 5363.1414301694. The cubic root of 28763286 is about 306.3934662533.

The spelling of 28763286 in words is "twenty-eight million, seven hundred sixty-three thousand, two hundred eighty-six".