28068650 has 12 divisors (see below), whose sum is σ = 52207782. Its totient is φ = 11227440.

The previous prime is 28068629. The next prime is 28068679. The reversal of 28068650 is 5686082.

It can be written as a sum of positive squares in 3 ways, for example, as 26739241 + 1329409 = 5171^2 + 1153^2 .

It is a super-2 number, since 2×28068650² = 1575698225645000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28068650.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280637 + ... + 280736.

Almost surely, 2^28068650 is an apocalyptic number.

28068650 is a deficient number, since it is larger than the sum of its proper divisors (24139132).

28068650 is a wasteful number, since it uses less digits than its factorization.

28068650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561385 (or 561380 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 28068650 is about 5297.9854661937. The cubic root of 28068650 is about 303.9068634931.

The spelling of 28068650 in words is "twenty-eight million, sixty-eight thousand, six hundred fifty".