28064746 has 16 divisors (see below), whose sum is σ = 43432200. Its totient is φ = 13592320.

The previous prime is 28064737. The next prime is 28064747. The reversal of 28064746 is 64746082.

It can be written as a sum of positive squares in 4 ways, for example, as 10634121 + 17430625 = 3261^2 + 4175^2 .

It is not an unprimeable number, because it can be changed into a prime (28064747) 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, 11070 + ... + 13366.

Almost surely, 2^28064746 is an apocalyptic number.

28064746 is a deficient number, since it is larger than the sum of its proper divisors (15367454).

28064746 is a wasteful number, since it uses less digits than its factorization.

28064746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489.

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 28064746 is about 5297.6170114496. The cubic root of 28064746 is about 303.8927729520.

The spelling of 28064746 in words is "twenty-eight million, sixty-four thousand, seven hundred forty-six".