28732744212 has 12 divisors (see below), whose sum is σ = 67043069856. Its totient is φ = 9577581400.

The previous prime is 28732744171. The next prime is 28732744231. The reversal of 28732744212 is 21244723782.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1197197664 + ... + 1197197687.

It is an arithmetic number, because the mean of its divisors is an integer number (5586922488).

Almost surely, 2^28732744212 is an apocalyptic number.

It is an amenable number.

28732744212 is an abundant number, since it is smaller than the sum of its proper divisors (38310325644).

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

28732744212 is a wasteful number, since it uses less digits than its factorization.

28732744212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394395358 (or 2394395356 counting only the distinct ones).

The product of its digits is 301056, while the sum is 42.

The spelling of 28732744212 in words is "twenty-eight billion, seven hundred thirty-two million, seven hundred forty-four thousand, two hundred twelve".