28789324284 has 48 divisors (see below), whose sum is σ = 76944930048. Its totient is φ = 8206942848.

The previous prime is 28789324247. The next prime is 28789324313. The reversal of 28789324284 is 48242398782.

It is a super-2 number, since 2×28789324284² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349617 + ... + 424040.

It is an arithmetic number, because the mean of its divisors is an integer number (1603019376).

Almost surely, 2^28789324284 is an apocalyptic number.

It is an amenable number.

28789324284 is an abundant number, since it is smaller than the sum of its proper divisors (48155605764).

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

28789324284 is a wasteful number, since it uses less digits than its factorization.

28789324284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774114 (or 774112 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 57.

The spelling of 28789324284 in words is "twenty-eight billion, seven hundred eighty-nine million, three hundred twenty-four thousand, two hundred eighty-four".