28076723284 has 24 divisors (see below), whose sum is σ = 49337051400. Its totient is φ = 13980466560.

The previous prime is 28076723267. The next prime is 28076723329. The reversal of 28076723284 is 48232767082.

It can be written as a sum of positive squares in 4 ways, for example, as 3884031684 + 24192691600 = 62322^2 + 155540^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4107982 + ... + 4114810.

It is an arithmetic number, because the mean of its divisors is an integer number (2055710475).

Almost surely, 2^28076723284 is an apocalyptic number.

It is an amenable number.

28076723284 is a deficient number, since it is larger than the sum of its proper divisors (21260328116).

28076723284 is a wasteful number, since it uses less digits than its factorization.

28076723284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10923 (or 10921 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 49.

The spelling of 28076723284 in words is "twenty-eight billion, seventy-six million, seven hundred twenty-three thousand, two hundred eighty-four".