28832790721 has 16 divisors (see below), whose sum is σ = 35228853504. Its totient is φ = 23034230784.

The previous prime is 28832790691. The next prime is 28832790809. The reversal of 28832790721 is 12709723882.

It is a happy number.

It is not a de Polignac number, because 28832790721 - 2⁹ = 28832790209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28832790421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1163920 + ... + 1188433.

It is an arithmetic number, because the mean of its divisors is an integer number (2201803344).

Almost surely, 2^28832790721 is an apocalyptic number.

It is an amenable number.

28832790721 is a deficient number, since it is larger than the sum of its proper divisors (6396062783).

28832790721 is a wasteful number, since it uses less digits than its factorization.

28832790721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352480.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 28832790721 in words is "twenty-eight billion, eight hundred thirty-two million, seven hundred ninety thousand, seven hundred twenty-one".