71000082 has 12 divisors (see below), whose sum is σ = 153833550. Its totient is φ = 23666688.

The previous prime is 71000081. The next prime is 71000087. The reversal of 71000082 is 28000017.

It can be written as a sum of positive squares in only one way, i.e., 66243321 + 4756761 = 8139^2 + 2181^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 3944449 = 71000082 / (7 + 1 + 0 + 0 + 0 + 0 + 8 + 2).

It is not an unprimeable number, because it can be changed into a prime (71000081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1972207 + ... + 1972242.

Almost surely, 2^71000082 is an apocalyptic number.

71000082 is an abundant number, since it is smaller than the sum of its proper divisors (82833468).

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

71000082 is a wasteful number, since it uses less digits than its factorization.

71000082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944457 (or 3944454 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 71000082 is about 8426.1546389798. The cubic root of 71000082 is about 414.0819343540.

Adding to 71000082 its reverse (28000017), we get a palindrome (99000099).

The spelling of 71000082 in words is "seventy-one million, eighty-two", and thus it is an aban number and an uban number.