86728994 has 8 divisors (see below), whose sum is σ = 141920208. Its totient is φ = 39422260.

The previous prime is 86728991. The next prime is 86729023. The reversal of 86728994 is 49982768.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (86728991) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1971092 + ... + 1971135.

It is an arithmetic number, because the mean of its divisors is an integer number (17740026).

Almost surely, 2^86728994 is an apocalyptic number.

86728994 is a deficient number, since it is larger than the sum of its proper divisors (55191214).

86728994 is a wasteful number, since it uses less digits than its factorization.

86728994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3942240.

The product of its digits is 1741824, while the sum is 53.

The square root of 86728994 is about 9312.8402756624. The cubic root of 86728994 is about 442.6441914677.

The spelling of 86728994 in words is "eighty-six million, seven hundred twenty-eight thousand, nine hundred ninety-four".