28382699520 has 672 divisors, whose sum is σ = 119240978688. Its totient is φ = 6096420864.

The previous prime is 28382699489. The next prime is 28382699539. The reversal of 28382699520 is 2599628382.

28382699520 is a `hidden beast` number, since 2 + 8 + 3 + 8 + 26 + 99 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43867837 + ... + 43868483.

Almost surely, 2^28382699520 is an apocalyptic number.

28382699520 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 28382699520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59620489344).

28382699520 is an abundant number, since it is smaller than the sum of its proper divisors (90858279168).

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

28382699520 is a wasteful number, since it uses less digits than its factorization.

28382699520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 28382699520 in words is "twenty-eight billion, three hundred eighty-two million, six hundred ninety-nine thousand, five hundred twenty".