28025050280 has 32 divisors (see below), whose sum is σ = 65090442240. Its totient is φ = 10848406080.

The previous prime is 28025050279. The next prime is 28025050283. The reversal of 28025050280 is 8205052082.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28025050283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11299184 + ... + 11301663.

It is an arithmetic number, because the mean of its divisors is an integer number (2034076320).

Almost surely, 2^28025050280 is an apocalyptic number.

28025050280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28025050280 is an abundant number, since it is smaller than the sum of its proper divisors (37065391960).

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

28025050280 is a wasteful number, since it uses less digits than its factorization.

28025050280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22600889 (or 22600885 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The spelling of 28025050280 in words is "twenty-eight billion, twenty-five million, fifty thousand, two hundred eighty".