28280121080 has 32 divisors (see below), whose sum is σ = 64286263440. Its totient is φ = 11195427840.

The previous prime is 28280121059. The next prime is 28280121203. The reversal of 28280121080 is 8012108282.

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 7 ways as a sum of consecutive naturals, for example, 3640466 + ... + 3648225.

Almost surely, 2^28280121080 is an apocalyptic number.

28280121080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28280121080 is an abundant number, since it is smaller than the sum of its proper divisors (36006142360).

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

28280121080 is a wasteful number, since it uses less digits than its factorization.

28280121080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7288799 (or 7288795 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 32.

The spelling of 28280121080 in words is "twenty-eight billion, two hundred eighty million, one hundred twenty-one thousand, eighty".