28373629647 has 12 divisors (see below), whose sum is σ = 41583391640. Its totient is φ = 17196138960.

The previous prime is 28373629589. The next prime is 28373629649. The reversal of 28373629647 is 74692637382.

It is not a de Polignac number, because 28373629647 - 2¹⁹ = 28373105359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28373629649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39081772 + ... + 39082497.

Almost surely, 2^28373629647 is an apocalyptic number.

28373629647 is a deficient number, since it is larger than the sum of its proper divisors (13209761993).

28373629647 is a wasteful number, since it uses less digits than its factorization.

28373629647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78164294 (or 78164283 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 57.

The spelling of 28373629647 in words is "twenty-eight billion, three hundred seventy-three million, six hundred twenty-nine thousand, six hundred forty-seven".