28965936765 has 16 divisors (see below), whose sum is σ = 48360521088. Its totient is φ = 14776825536.

The previous prime is 28965936757. The next prime is 28965936823. The reversal of 28965936765 is 56763956982.

It is a happy number.

It is not a de Polignac number, because 28965936765 - 2³ = 28965936757 is a prime.

It is a super-3 number, since 3×28965936765³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28965936696 and 28965936705.

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, 41979274 + ... + 41979963.

It is an arithmetic number, because the mean of its divisors is an integer number (3022532568).

Almost surely, 2^28965936765 is an apocalyptic number.

It is an amenable number.

28965936765 is a deficient number, since it is larger than the sum of its proper divisors (19394584323).

28965936765 is a wasteful number, since it uses less digits than its factorization.

28965936765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83959268.

The product of its digits is 146966400, while the sum is 66.

The spelling of 28965936765 in words is "twenty-eight billion, nine hundred sixty-five million, nine hundred thirty-six thousand, seven hundred sixty-five".