28783158336 has 63 divisors (see below), whose sum is σ = 82513398981. Its totient is φ = 9593028864.

The previous prime is 28783158331. The next prime is 28783158343. The reversal of 28783158336 is 63385138782.

The square root of 28783158336 is 169656.

It is a perfect power (a square), and thus also a powerful number.

28783158336 is a `hidden beast` number, since 2 + 87 + 83 + 158 + 336 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10068918336 + 18714240000 = 100344^2 + 136800^2 .

It is not an unprimeable number, because it can be changed into a prime (28783158331) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4068210 + ... + 4075278.

Almost surely, 2^28783158336 is an apocalyptic number.

28783158336 is the 169656-th square number.

It is an amenable number.

28783158336 is an abundant number, since it is smaller than the sum of its proper divisors (53730240645).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28783158336 is an frugal number, since it uses more digits than its factorization.

28783158336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14156 (or 7074 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 28783158336 in words is "twenty-eight billion, seven hundred eighty-three million, one hundred fifty-eight thousand, three hundred thirty-six".