28736951284 has 12 divisors (see below), whose sum is σ = 51238526724. Its totient is φ = 14097372224.

The previous prime is 28736951279. The next prime is 28736951329. The reversal of 28736951284 is 48215963782.

It can be written as a sum of positive squares in 2 ways, for example, as 25632010000 + 3104941284 = 160100^2 + 55722^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67775617 + ... + 67776040.

It is an arithmetic number, because the mean of its divisors is an integer number (4269877227).

Almost surely, 2^28736951284 is an apocalyptic number.

It is an amenable number.

28736951284 is a deficient number, since it is larger than the sum of its proper divisors (22501575440).

28736951284 is a wasteful number, since it uses less digits than its factorization.

28736951284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135551714 (or 135551712 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 55.

The spelling of 28736951284 in words is "twenty-eight billion, seven hundred thirty-six million, nine hundred fifty-one thousand, two hundred eighty-four".