86826728 has 8 divisors (see below), whose sum is σ = 162800130. Its totient is φ = 43413360.

The previous prime is 86826721. The next prime is 86826731. The reversal of 86826728 is 82762868.

It can be written as a sum of positive squares in only one way, i.e., 47914084 + 38912644 = 6922^2 + 6238^2 .

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

It is not an unprimeable number, because it can be changed into a prime (86826721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5426663 + ... + 5426678.

Almost surely, 2^86826728 is an apocalyptic number.

It is an amenable number.

86826728 is a deficient number, since it is larger than the sum of its proper divisors (75973402).

86826728 is a wasteful number, since it uses less digits than its factorization.

86826728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10853347 (or 10853343 counting only the distinct ones).

The product of its digits is 516096, while the sum is 47.

The square root of 86826728 is about 9318.0860695746. The cubic root of 86826728 is about 442.8103994270.

The spelling of 86826728 in words is "eighty-six million, eight hundred twenty-six thousand, seven hundred twenty-eight".