28206683400 has 576 divisors, whose sum is σ = 105341472000. Its totient is φ = 6221967360.

The previous prime is 28206683389. The next prime is 28206683437. The reversal of 28206683400 is 438660282.

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 143 ways as a sum of consecutive naturals, for example, 189306526 + ... + 189306674.

It is an arithmetic number, because the mean of its divisors is an integer number (182884500).

Almost surely, 2^28206683400 is an apocalyptic number.

28206683400 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 28206683400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52670736000).

28206683400 is an abundant number, since it is smaller than the sum of its proper divisors (77134788600).

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

28206683400 is a wasteful number, since it uses less digits than its factorization.

28206683400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The spelling of 28206683400 in words is "twenty-eight billion, two hundred six million, six hundred eighty-three thousand, four hundred".