71286306 has 64 divisors (see below), whose sum is σ = 176940288. Its totient is φ = 18643968.

The previous prime is 71286301. The next prime is 71286311. The reversal of 71286306 is 60368217.

It is an interprime number because it is at equal distance from previous prime (71286301) and next prime (71286311).

It is not an unprimeable number, because it can be changed into a prime (71286301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74326 + ... + 75278.

It is an arithmetic number, because the mean of its divisors is an integer number (2764692).

Almost surely, 2^71286306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71286306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88470144).

71286306 is an abundant number, since it is smaller than the sum of its proper divisors (105653982).

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

71286306 is a wasteful number, since it uses less digits than its factorization.

71286306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 71286306 is about 8443.1218160109. The cubic root of 71286306 is about 414.6376204684.

The spelling of 71286306 in words is "seventy-one million, two hundred eighty-six thousand, three hundred six".