28211930080 has 48 divisors (see below), whose sum is σ = 67337842320. Its totient is φ = 11168428032.

The previous prime is 28211930059. The next prime is 28211930093. The reversal of 28211930080 is 8003911282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 893370 + ... + 924409.

It is an arithmetic number, because the mean of its divisors is an integer number (1402871715).

Almost surely, 2^28211930080 is an apocalyptic number.

28211930080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28211930080 is an abundant number, since it is smaller than the sum of its proper divisors (39125912240).

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

28211930080 is a wasteful number, since it uses less digits than its factorization.

28211930080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817891 (or 1817883 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 28211930080 in words is "twenty-eight billion, two hundred eleven million, nine hundred thirty thousand, eighty".