28704420284 has 24 divisors (see below), whose sum is σ = 52313688000. Its totient is φ = 13764296000.

The previous prime is 28704420263. The next prime is 28704420299. The reversal of 28704420284 is 48202440782.

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, 813092 + ... + 847659.

It is an arithmetic number, because the mean of its divisors is an integer number (2179737000).

Almost surely, 2^28704420284 is an apocalyptic number.

It is an amenable number.

28704420284 is a deficient number, since it is larger than the sum of its proper divisors (23609267716).

28704420284 is a wasteful number, since it uses less digits than its factorization.

28704420284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660933 (or 1660931 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 41.

The spelling of 28704420284 in words is "twenty-eight billion, seven hundred four million, four hundred twenty thousand, two hundred eighty-four".