71081208 has 144 divisors (see below), whose sum is σ = 217854000. Its totient is φ = 20908800.

The previous prime is 71081183. The next prime is 71081221. The reversal of 71081208 is 80218017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 357093 + ... + 357291.

It is an arithmetic number, because the mean of its divisors is an integer number (1512875).

Almost surely, 2^71081208 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 71081208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108927000).

71081208 is an abundant number, since it is smaller than the sum of its proper divisors (146772792).

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

71081208 is a wasteful number, since it uses less digits than its factorization.

71081208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 71081208 is about 8430.9672043011. The cubic root of 71081208 is about 414.2395868693.

It can be divided in two parts, 71081 and 208, that added together give a square (71289 = 267²).

The spelling of 71081208 in words is "seventy-one million, eighty-one thousand, two hundred eight".