28804142965 has 16 divisors (see below), whose sum is σ = 37834047216. Its totient is φ = 20922048000.

The previous prime is 28804142957. The next prime is 28804142971. The reversal of 28804142965 is 56924140882.

It can be written as a sum of positive squares in 8 ways, for example, as 13824586084 + 14979556881 = 117578^2 + 122391^2 .

It is not a de Polignac number, because 28804142965 - 2³ = 28804142957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3628336 + ... + 3636265.

It is an arithmetic number, because the mean of its divisors is an integer number (2364627951).

Almost surely, 2^28804142965 is an apocalyptic number.

It is an amenable number.

28804142965 is a deficient number, since it is larger than the sum of its proper divisors (9029904251).

28804142965 is a wasteful number, since it uses less digits than its factorization.

28804142965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7264680.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 28804142965 in words is "twenty-eight billion, eight hundred four million, one hundred forty-two thousand, nine hundred sixty-five".