86807128 has 8 divisors (see below), whose sum is σ = 162763380. Its totient is φ = 43403560.

The previous prime is 86807111. The next prime is 86807131. The reversal of 86807128 is 82170868.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5425438 + ... + 5425453.

Almost surely, 2^86807128 is an apocalyptic number.

It is an amenable number.

86807128 is a deficient number, since it is larger than the sum of its proper divisors (75956252).

86807128 is a wasteful number, since it uses less digits than its factorization.

86807128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10850897 (or 10850893 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 86807128 is about 9317.0342920910. The cubic root of 86807128 is about 442.7770773644. Note that the first 3 decimals are identical.

The spelling of 86807128 in words is "eighty-six million, eight hundred seven thousand, one hundred twenty-eight".