28409834215 has 32 divisors (see below), whose sum is σ = 41039769600. Its totient is φ = 18852573600.

The previous prime is 28409834191. The next prime is 28409834231. The reversal of 28409834215 is 51243890482.

It is not a de Polignac number, because 28409834215 - 2¹³ = 28409826023 is a prime.

It is a congruent number.

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, 214021 + ... + 320350.

It is an arithmetic number, because the mean of its divisors is an integer number (1282492800).

Almost surely, 2^28409834215 is an apocalyptic number.

28409834215 is a deficient number, since it is larger than the sum of its proper divisors (12629935385).

28409834215 is an equidigital number, since it uses as much as digits as its factorization.

28409834215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534428 (or 534414 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 28409834215 in words is "twenty-eight billion, four hundred nine million, eight hundred thirty-four thousand, two hundred fifteen".