86287392 has 72 divisors (see below), whose sum is σ = 250053804. Its totient is φ = 28214784.

The previous prime is 86287391. The next prime is 86287423. The reversal of 86287392 is 29378268.

It can be written as a sum of positive squares in 2 ways, for example, as 80353296 + 5934096 = 8964^2 + 2436^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (86287391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12438 + ... + 18090.

Almost surely, 2^86287392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86287392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125026902).

86287392 is an abundant number, since it is smaller than the sum of its proper divisors (163766412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86287392 is a wasteful number, since it uses less digits than its factorization.

86287392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5722 (or 5711 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 86287392 is about 9289.1007099719. The cubic root of 86287392 is about 441.8916354945.

The spelling of 86287392 in words is "eighty-six million, two hundred eighty-seven thousand, three hundred ninety-two".