28293770732 has 24 divisors (see below), whose sum is σ = 52748068800. Its totient is φ = 13240835856.

The previous prime is 28293770731. The next prime is 28293770741. The reversal of 28293770732 is 23707739282.

It is not an unprimeable number, because it can be changed into a prime (28293770731) by changing a digit.

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, 2236382 + ... + 2248997.

It is an arithmetic number, because the mean of its divisors is an integer number (2197836200).

Almost surely, 2^28293770732 is an apocalyptic number.

It is an amenable number.

28293770732 is a deficient number, since it is larger than the sum of its proper divisors (24454298068).

28293770732 is a wasteful number, since it uses less digits than its factorization.

28293770732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4485485 (or 4485483 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 50.

The spelling of 28293770732 in words is "twenty-eight billion, two hundred ninety-three million, seven hundred seventy thousand, seven hundred thirty-two".