28052500278 has 32 divisors (see below), whose sum is σ = 62118979200. Its totient is φ = 8373879360.

The previous prime is 28052500187. The next prime is 28052500303. The reversal of 28052500278 is 87200525082.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3167503 + ... + 3176346.

It is an arithmetic number, because the mean of its divisors is an integer number (1941218100).

Almost surely, 2^28052500278 is an apocalyptic number.

28052500278 is an abundant number, since it is smaller than the sum of its proper divisors (34066478922).

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

28052500278 is a wasteful number, since it uses less digits than its factorization.

28052500278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343932.

The product of its (nonzero) digits is 89600, while the sum is 39.

The spelling of 28052500278 in words is "twenty-eight billion, fifty-two million, five hundred thousand, two hundred seventy-eight".