28395136692 has 72 divisors (see below), whose sum is σ = 77452187904. Its totient is φ = 8719523136.

The previous prime is 28395136691. The next prime is 28395136697. The reversal of 28395136692 is 29663159382.

28395136692 is a `hidden beast` number, since 2 + 8 + 39 + 513 + 6 + 6 + 92 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28395136691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175093 + ... + 295715.

It is an arithmetic number, because the mean of its divisors is an integer number (1075724832).

Almost surely, 2^28395136692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28395136692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38726093952).

28395136692 is an abundant number, since it is smaller than the sum of its proper divisors (49057051212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28395136692 is a wasteful number, since it uses less digits than its factorization.

28395136692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121149 (or 121144 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The spelling of 28395136692 in words is "twenty-eight billion, three hundred ninety-five million, one hundred thirty-six thousand, six hundred ninety-two".