28860809685420 has 96 divisors (see below), whose sum is σ = 86293500088320. Its totient is φ = 7191124980480.

The previous prime is 28860809685289. The next prime is 28860809685469. The reversal of 28860809685420 is 2458690806882.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267473032 + ... + 267580911.

It is an arithmetic number, because the mean of its divisors is an integer number (898890625920).

Almost surely, 2^{28860809685420} is an apocalyptic number.

28860809685420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28860809685420 is an abundant number, since it is smaller than the sum of its proper divisors (57432690402900).

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

28860809685420 is a wasteful number, since it uses less digits than its factorization.

28860809685420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535054015 (or 535054013 counting only the distinct ones).

The product of its (nonzero) digits is 106168320, while the sum is 66.

The spelling of 28860809685420 in words is "twenty-eight trillion, eight hundred sixty billion, eight hundred nine million, six hundred eighty-five thousand, four hundred twenty".