28733387646 has 16 divisors (see below), whose sum is σ = 57497577984. Its totient is φ = 9572662104.

The previous prime is 28733387609. The next prime is 28733387651. The reversal of 28733387646 is 64678333782.

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 7 ways as a sum of consecutive naturals, for example, 1271310 + ... + 1293713.

It is an arithmetic number, because the mean of its divisors is an integer number (3593598624).

Almost surely, 2^28733387646 is an apocalyptic number.

28733387646 is an abundant number, since it is smaller than the sum of its proper divisors (28764190338).

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

28733387646 is a wasteful number, since it uses less digits than its factorization.

28733387646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566895.

The product of its digits is 24385536, while the sum is 57.

The spelling of 28733387646 in words is "twenty-eight billion, seven hundred thirty-three million, three hundred eighty-seven thousand, six hundred forty-six".