71078212 has 12 divisors (see below), whose sum is σ = 125886096. Its totient is φ = 35110760.

The previous prime is 71078201. The next prime is 71078239. The reversal of 71078212 is 21287017.

It is a super-2 number, since 2×71078212² = 10104224442233888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106714 + ... + 107377.

It is an arithmetic number, because the mean of its divisors is an integer number (10490508).

Almost surely, 2^71078212 is an apocalyptic number.

It is an amenable number.

71078212 is a deficient number, since it is larger than the sum of its proper divisors (54807884).

71078212 is a wasteful number, since it uses less digits than its factorization.

71078212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214178 (or 214176 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 71078212 is about 8430.7895241193. The cubic root of 71078212 is about 414.2337668629.

The spelling of 71078212 in words is "seventy-one million, seventy-eight thousand, two hundred twelve".