28677220000 has 480 divisors, whose sum is σ = 85438450944. Its totient is φ = 9331200000.

The previous prime is 28677219931. The next prime is 28677220001. The reversal of 28677220000 is 2277682.

It is not an unprimeable number, because it can be changed into a prime (28677220001) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 105819865 + ... + 105820135.

Almost surely, 2^28677220000 is an apocalyptic number.

28677220000 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 28677220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42719225472).

28677220000 is an abundant number, since it is smaller than the sum of its proper divisors (56761230944).

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

28677220000 is a wasteful number, since it uses less digits than its factorization.

28677220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

Adding to 28677220000 its reverse (2277682), we get a palindrome (28679497682).

The spelling of 28677220000 in words is "twenty-eight billion, six hundred seventy-seven million, two hundred twenty thousand".