28534140036 has 144 divisors (see below), whose sum is σ = 78311833600. Its totient is φ = 8730783936.

The previous prime is 28534140031. The next prime is 28534140067. The reversal of 28534140036 is 63004143582.

28534140036 is a `hidden beast` number, since 285 + 341 + 4 + 0 + 0 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28534140031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3731505 + ... + 3739143.

Almost surely, 2^28534140036 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 28534140036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39155916800).

28534140036 is an abundant number, since it is smaller than the sum of its proper divisors (49777693564).

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

28534140036 is a wasteful number, since it uses less digits than its factorization.

28534140036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7838 (or 7833 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 28534140036 in words is "twenty-eight billion, five hundred thirty-four million, one hundred forty thousand, thirty-six".