28300255778 has 8 divisors (see below), whose sum is σ = 42927354540. Its totient is φ = 13991137600.

The previous prime is 28300255741. The next prime is 28300255783. The reversal of 28300255778 is 87755200382.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27660013969 + 640241809 = 166313^2 + 25303^2 .

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

It is a Curzon number.

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, 79494923 + ... + 79495278.

Almost surely, 2^28300255778 is an apocalyptic number.

28300255778 is a deficient number, since it is larger than the sum of its proper divisors (14627098762).

28300255778 is a wasteful number, since it uses less digits than its factorization.

28300255778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158990292.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 28300255778 in words is "twenty-eight billion, three hundred million, two hundred fifty-five thousand, seven hundred seventy-eight".