28747534074672 has 80 divisors (see below), whose sum is σ = 84878350668032. Its totient is φ = 8213128392960.

The previous prime is 28747534074617. The next prime is 28747534074713. The reversal of 28747534074672 is 27647043574782.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 3769818 + ... + 8467974.

Almost surely, 2^{28747534074672} is an apocalyptic number.

It is an amenable number.

28747534074672 is an abundant number, since it is smaller than the sum of its proper divisors (56130816593360).

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

28747534074672 is a wasteful number, since it uses less digits than its factorization.

28747534074672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4716386 (or 4716380 counting only the distinct ones).

The product of its (nonzero) digits is 442552320, while the sum is 66.

The spelling of 28747534074672 in words is "twenty-eight trillion, seven hundred forty-seven billion, five hundred thirty-four million, seventy-four thousand, six hundred seventy-two".