28418604280 has 32 divisors (see below), whose sum is σ = 69754757040. Its totient is φ = 10334037760.

The previous prime is 28418604271. The next prime is 28418604311. The reversal of 28418604280 is 8240681482.

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, 32293429 + ... + 32294308.

Almost surely, 2^28418604280 is an apocalyptic number.

28418604280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28418604280 is an abundant number, since it is smaller than the sum of its proper divisors (41336152760).

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

28418604280 is a wasteful number, since it uses less digits than its factorization.

28418604280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64587759 (or 64587755 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 43.

The spelling of 28418604280 in words is "twenty-eight billion, four hundred eighteen million, six hundred four thousand, two hundred eighty".