28386534000 has 320 divisors, whose sum is σ = 103287674880. Its totient is φ = 6643840000.

The previous prime is 28386533947. The next prime is 28386534017. The reversal of 28386534000 is 43568382.

It is a self number, because there is not a number n which added to its sum of digits gives 28386534000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1906585 + ... + 1921415.

It is an arithmetic number, because the mean of its divisors is an integer number (322773984).

Almost surely, 2^28386534000 is an apocalyptic number.

28386534000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28386534000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51643837440).

28386534000 is an abundant number, since it is smaller than the sum of its proper divisors (74901140880).

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

28386534000 is a wasteful number, since it uses less digits than its factorization.

28386534000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14897 (or 14881 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 28386534000 in words is "twenty-eight billion, three hundred eighty-six million, five hundred thirty-four thousand".