71086730 has 32 divisors (see below), whose sum is σ = 150329088. Its totient is φ = 23860800.

The previous prime is 71086711. The next prime is 71086753. The reversal of 71086730 is 3768017.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23426 + ... + 26285.

It is an arithmetic number, because the mean of its divisors is an integer number (4697784).

Almost surely, 2^71086730 is an apocalyptic number.

71086730 is an abundant number, since it is smaller than the sum of its proper divisors (79242358).

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

71086730 is a wasteful number, since it uses less digits than its factorization.

71086730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49742.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 71086730 is about 8431.2946811270. The cubic root of 71086730 is about 414.2503134351.

The spelling of 71086730 in words is "seventy-one million, eighty-six thousand, seven hundred thirty".