84331682728 has 8 divisors (see below), whose sum is σ = 158121905130. Its totient is φ = 42165841360.

The previous prime is 84331682717. The next prime is 84331682741. The reversal of 84331682728 is 82728613348.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 82657400004 + 1674282724 = 287502^2 + 40918^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×84331682728² (a number of 23 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 5270730163 + ... + 5270730178.

Almost surely, 2^84331682728 is an apocalyptic number.

It is an amenable number.

84331682728 is a deficient number, since it is larger than the sum of its proper divisors (73790222402).

84331682728 is a wasteful number, since it uses less digits than its factorization.

84331682728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10541460347 (or 10541460343 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 52.

The spelling of 84331682728 in words is "eighty-four billion, three hundred thirty-one million, six hundred eighty-two thousand, seven hundred twenty-eight".