28768732951 has 16 divisors (see below), whose sum is σ = 34456302400. Its totient is φ = 23992446240.

The previous prime is 28768732939. The next prime is 28768732991. The reversal of 28768732951 is 15923786782.

It is a happy number.

It is not a de Polignac number, because 28768732951 - 2⁹ = 28768732439 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 (28768732901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1120740 + ... + 1146121.

It is an arithmetic number, because the mean of its divisors is an integer number (2153518900).

Almost surely, 2^28768732951 is an apocalyptic number.

28768732951 is a deficient number, since it is larger than the sum of its proper divisors (5687569449).

28768732951 is an equidigital number, since it uses as much as digits as its factorization.

28768732951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266919 (or 2266905 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 58.

The spelling of 28768732951 in words is "twenty-eight billion, seven hundred sixty-eight million, seven hundred thirty-two thousand, nine hundred fifty-one".