28376917140 has 384 divisors, whose sum is σ = 99352770048. Its totient is φ = 5945425920.

The previous prime is 28376917139. The next prime is 28376917141. The reversal of 28376917140 is 4171967382.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28376917139) and next prime (28376917141).

It is a self number, because there is not a number n which added to its sum of digits gives 28376917140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28376917141) 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 127 ways as a sum of consecutive naturals, for example, 37485642 + ... + 37486398.

It is an arithmetic number, because the mean of its divisors is an integer number (258731172).

Almost surely, 2^28376917140 is an apocalyptic number.

28376917140 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 28376917140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49676385024).

28376917140 is an abundant number, since it is smaller than the sum of its proper divisors (70975852908).

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

28376917140 is a wasteful number, since it uses less digits than its factorization.

28376917140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 1065 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 28376917140 in words is "twenty-eight billion, three hundred seventy-six million, nine hundred seventeen thousand, one hundred forty".