86728347 has 16 divisors (see below), whose sum is σ = 128904480. Its totient is φ = 57630816.

The previous prime is 86728337. The next prime is 86728361. The reversal of 86728347 is 74382768.

It is a happy number.

It is not a de Polignac number, because 86728347 - 2⁸ = 86728091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86728337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3493 + ... + 13625.

It is an arithmetic number, because the mean of its divisors is an integer number (8056530).

Almost surely, 2^86728347 is an apocalyptic number.

86728347 is a deficient number, since it is larger than the sum of its proper divisors (42176133).

86728347 is a wasteful number, since it uses less digits than its factorization.

86728347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10459 (or 10453 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 86728347 is about 9312.8055386119. The cubic root of 86728347 is about 442.6430907535.

The spelling of 86728347 in words is "eighty-six million, seven hundred twenty-eight thousand, three hundred forty-seven".