86728029 has 8 divisors (see below), whose sum is σ = 115834752. Its totient is φ = 57720000.

The previous prime is 86728013. The next prime is 86728039. The reversal of 86728029 is 92082768.

It is a happy number.

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

It is not a de Polignac number, because 86728029 - 2⁴ = 86728013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86728039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22597 + ... + 26154.

It is an arithmetic number, because the mean of its divisors is an integer number (14479344).

Almost surely, 2^86728029 is an apocalyptic number.

It is an amenable number.

86728029 is a deficient number, since it is larger than the sum of its proper divisors (29106723).

86728029 is a wasteful number, since it uses less digits than its factorization.

86728029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49347.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 86728029 is about 9312.7884653309. The cubic root of 86728029 is about 442.6425497513.

The spelling of 86728029 in words is "eighty-six million, seven hundred twenty-eight thousand, twenty-nine".