28651255210 has 16 divisors (see below), whose sum is σ = 51575367816. Its totient is φ = 11459811328.

The previous prime is 28651255189. The next prime is 28651255211. The reversal of 28651255210 is 1255215682.

It can be written as a sum of positive squares in 4 ways, for example, as 14132692161 + 14518563049 = 118881^2 + 120493^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28651255210.

It is not an unprimeable number, because it can be changed into a prime (28651255211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108882 + ... + 262978.

Almost surely, 2^28651255210 is an apocalyptic number.

28651255210 is a deficient number, since it is larger than the sum of its proper divisors (22924112606).

28651255210 is a wasteful number, since it uses less digits than its factorization.

28651255210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172697.

The product of its (nonzero) digits is 48000, while the sum is 37.

The spelling of 28651255210 in words is "twenty-eight billion, six hundred fifty-one million, two hundred fifty-five thousand, two hundred ten".