28934866 has 16 divisors (see below), whose sum is σ = 45086040. Its totient is φ = 13910400.

The previous prime is 28934831. The next prime is 28934869. The reversal of 28934866 is 66843982.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14984641 + 13950225 = 3871^2 + 3735^2 .

It is not an unprimeable number, because it can be changed into a prime (28934869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15166 + ... + 16966.

Almost surely, 2^28934866 is an apocalyptic number.

28934866 is a deficient number, since it is larger than the sum of its proper divisors (16151174).

28934866 is a wasteful number, since it uses less digits than its factorization.

28934866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109.

The product of its digits is 497664, while the sum is 46.

The square root of 28934866 is about 5379.1138675436. The cubic root of 28934866 is about 307.0014960298.

The spelling of 28934866 in words is "twenty-eight million, nine hundred thirty-four thousand, eight hundred sixty-six".