28166734300 has 72 divisors (see below), whose sum is σ = 66557458800. Its totient is φ = 10305630720.

The previous prime is 28166734259. The next prime is 28166734331. The reversal of 28166734300 is 343766182.

It is a super-2 number, since 2×28166734300² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200497 + ... + 310696.

It is an arithmetic number, because the mean of its divisors is an integer number (924409150).

Almost surely, 2^28166734300 is an apocalyptic number.

28166734300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28166734300 is an abundant number, since it is smaller than the sum of its proper divisors (38390724500).

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

28166734300 is a wasteful number, since it uses less digits than its factorization.

28166734300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511255 (or 511248 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 28166734300 in words is "twenty-eight billion, one hundred sixty-six million, seven hundred thirty-four thousand, three hundred".