26800000280 has 32 divisors (see below), whose sum is σ = 60740159040. Its totient is φ = 10641749760.

The previous prime is 26800000267. The next prime is 26800000291. The reversal of 26800000280 is 8200000862.

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, 2439776 + ... + 2450735.

It is an arithmetic number, because the mean of its divisors is an integer number (1898129970).

Almost surely, 2^26800000280 is an apocalyptic number.

26800000280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26800000280 is an abundant number, since it is smaller than the sum of its proper divisors (33940158760).

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

26800000280 is a wasteful number, since it uses less digits than its factorization.

26800000280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4890659 (or 4890655 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The spelling of 26800000280 in words is "twenty-six billion, eight hundred million, two hundred eighty", and thus it is an aban number.