28788829865 has 32 divisors (see below), whose sum is σ = 36903638016. Its totient is φ = 21509452800.

The previous prime is 28788829841. The next prime is 28788829873. The reversal of 28788829865 is 56892888782.

It is not a de Polignac number, because 28788829865 - 2⁸ = 28788829609 is a prime.

It is a super-3 number, since 3×28788829865³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2334215 + ... + 2346515.

It is an arithmetic number, because the mean of its divisors is an integer number (1153238688).

Almost surely, 2^28788829865 is an apocalyptic number.

It is an amenable number.

28788829865 is a deficient number, since it is larger than the sum of its proper divisors (8114808151).

28788829865 is a wasteful number, since it uses less digits than its factorization.

28788829865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12809.

The product of its digits is 247726080, while the sum is 71.

The spelling of 28788829865 in words is "twenty-eight billion, seven hundred eighty-eight million, eight hundred twenty-nine thousand, eight hundred sixty-five".