86731428004 has 81 divisors (see below), whose sum is σ = 168624449091. Its totient is φ = 39015624960.

The previous prime is 86731427987. The next prime is 86731428011. The reversal of 86731428004 is 40082413768.

The square root of 86731428004 is 294502.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1378636900 + 85352791104 = 37130^2 + 292152^2 .

It is a super-2 number, since 2×86731428004² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 359881324 + ... + 359881564.

Almost surely, 2^86731428004 is an apocalyptic number.

86731428004 is the 294502-nd square number.

It is an amenable number.

86731428004 is a deficient number, since it is larger than the sum of its proper divisors (81893021087).

86731428004 is a wasteful number, since it uses less digits than its factorization.

86731428004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 86731428004 in words is "eighty-six billion, seven hundred thirty-one million, four hundred twenty-eight thousand, four".