28447388374482 has 144 divisors (see below), whose sum is σ = 82333814752800. Its totient is φ = 7000040839680.

The previous prime is 28447388374417. The next prime is 28447388374499.

28447388374482 is a `hidden beast` number, since 2 + 8 + 4 + 4 + 73 + 8 + 8 + 3 + 74 + 482 = 666.

28447388374482 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×28447388374482² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28447388374482.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 76976607 + ... + 77345282.

It is an arithmetic number, because the mean of its divisors is an integer number (571762602450).

Almost surely, 2^{28447388374482} is an apocalyptic number.

28447388374482 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28447388374482 is an abundant number, since it is smaller than the sum of its proper divisors (53886426378318).

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

28447388374482 is a wasteful number, since it uses less digits than its factorization.

28447388374482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154321941 (or 154321931 counting only the distinct ones).

The product of its digits is 1849688064, while the sum is 72.

The spelling of 28447388374482 in words is "twenty-eight trillion, four hundred forty-seven billion, three hundred eighty-eight million, three hundred seventy-four thousand, four hundred eighty-two".