28878500610 has 96 divisors (see below), whose sum is σ = 81001056240. Its totient is φ = 7111163904.

The previous prime is 28878500579. The next prime is 28878500617. The reversal of 28878500610 is 1600587882.

28878500610 is a `hidden beast` number, since 2 + 8 + 87 + 8 + 500 + 61 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 17180131329 + 11698369281 = 131073^2 + 108159^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (28878500617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 96975 + ... + 259154.

Almost surely, 2^28878500610 is an apocalyptic number.

28878500610 is an abundant number, since it is smaller than the sum of its proper divisors (52122555630).

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

28878500610 is a wasteful number, since it uses less digits than its factorization.

28878500610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356212 (or 356209 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 28878500610 in words is "twenty-eight billion, eight hundred seventy-eight million, five hundred thousand, six hundred ten".