28650868 has 12 divisors (see below), whose sum is σ = 50599780. Its totient is φ = 14193792.

The previous prime is 28650833. The next prime is 28650887. The reversal of 28650868 is 86805682.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22638564 + 6012304 = 4758^2 + 2452^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32421 + ... + 33292.

Almost surely, 2^28650868 is an apocalyptic number.

It is an amenable number.

28650868 is a deficient number, since it is larger than the sum of its proper divisors (21948912).

28650868 is a wasteful number, since it uses less digits than its factorization.

28650868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65826 (or 65824 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 28650868 is about 5352.6505583683. The cubic root of 28650868 is about 305.9937771956.

The spelling of 28650868 in words is "twenty-eight million, six hundred fifty thousand, eight hundred sixty-eight".