28365656382 has 32 divisors (see below), whose sum is σ = 72039763200. Its totient is φ = 8104473144.

The previous prime is 28365656353. The next prime is 28365656393.

28365656382 is a `hidden beast` number, since 28 + 3 + 6 + 56 + 563 + 8 + 2 = 666.

28365656382 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×28365656382² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 15 ways as a sum of consecutive naturals, for example, 37520332 + ... + 37521087.

It is an arithmetic number, because the mean of its divisors is an integer number (2251242600).

Almost surely, 2^28365656382 is an apocalyptic number.

28365656382 is an abundant number, since it is smaller than the sum of its proper divisors (43674106818).

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

28365656382 is a wasteful number, since it uses less digits than its factorization.

28365656382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75041437 (or 75041431 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 54.

The spelling of 28365656382 in words is "twenty-eight billion, three hundred sixty-five million, six hundred fifty-six thousand, three hundred eighty-two".