28360886436 has 72 divisors (see below), whose sum is σ = 72469785024. Its totient is φ = 9351017280.

The previous prime is 28360886431. The next prime is 28360886447. The reversal of 28360886436 is 63468806382.

It is a happy number.

28360886436 is a `hidden beast` number, since 28 + 3 + 608 + 8 + 6 + 4 + 3 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (28360886431) 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, 3596530 + ... + 3604406.

It is an arithmetic number, because the mean of its divisors is an integer number (1006524792).

Almost surely, 2^28360886436 is an apocalyptic number.

It is an amenable number.

28360886436 is an abundant number, since it is smaller than the sum of its proper divisors (44108898588).

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

28360886436 is a wasteful number, since it uses less digits than its factorization.

28360886436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8961 (or 8956 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 54.

The spelling of 28360886436 in words is "twenty-eight billion, three hundred sixty million, eight hundred eighty-six thousand, four hundred thirty-six".