28646650 has 12 divisors (see below), whose sum is σ = 53282862. Its totient is φ = 11458640.

The previous prime is 28646633. The next prime is 28646671. The reversal of 28646650 is 5664682.

It can be written as a sum of positive squares in 3 ways, for example, as 18207289 + 10439361 = 4267^2 + 3231^2 .

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, 286417 + ... + 286516.

Almost surely, 2^28646650 is an apocalyptic number.

28646650 is a deficient number, since it is larger than the sum of its proper divisors (24636212).

28646650 is a wasteful number, since it uses less digits than its factorization.

28646650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572945 (or 572940 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 28646650 is about 5352.2565334632. The cubic root of 28646650 is about 305.9787602556.

The spelling of 28646650 in words is "twenty-eight million, six hundred forty-six thousand, six hundred fifty".