71050212 has 72 divisors (see below), whose sum is σ = 189097272. Its totient is φ = 22464000.

The previous prime is 71050211. The next prime is 71050237. The reversal of 71050212 is 21205017.

It can be written as a sum of positive squares in 4 ways, for example, as 86436 + 70963776 = 294^2 + 8424^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (71050211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53962 + ... + 55262.

It is an arithmetic number, because the mean of its divisors is an integer number (2626351).

Almost surely, 2^71050212 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 71050212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94548636).

71050212 is an abundant number, since it is smaller than the sum of its proper divisors (118047060).

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

71050212 is a wasteful number, since it uses less digits than its factorization.

71050212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389 (or 1384 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 71050212 is about 8429.1287806036. The cubic root of 71050212 is about 414.1793663723.

Adding to 71050212 its reverse (21205017), we get a palindrome (92255229).

The spelling of 71050212 in words is "seventy-one million, fifty thousand, two hundred twelve".