28064930 has 8 divisors (see below), whose sum is σ = 50516892. Its totient is φ = 11225968.

The previous prime is 28064921. The next prime is 28064963. The reversal of 28064930 is 3946082.

It can be written as a sum of positive squares in 2 ways, for example, as 26245129 + 1819801 = 5123^2 + 1349^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 1403237 + ... + 1403256.

Almost surely, 2^28064930 is an apocalyptic number.

28064930 is a deficient number, since it is larger than the sum of its proper divisors (22451962).

28064930 is a wasteful number, since it uses less digits than its factorization.

28064930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2806500.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 28064930 is about 5297.6343777199. The cubic root of 28064930 is about 303.8934370847.

The spelling of 28064930 in words is "twenty-eight million, sixty-four thousand, nine hundred thirty".