71032212 has 72 divisors (see below), whose sum is σ = 184242240. Its totient is φ = 23068800.

The previous prime is 71032187. The next prime is 71032219. The reversal of 71032212 is 21223017.

It is a super-2 number, since 2×71032212² = 10091150283225888, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71032219) 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, 396739 + ... + 396917.

It is an arithmetic number, because the mean of its divisors is an integer number (2558920).

Almost surely, 2^71032212 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 71032212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92121120).

71032212 is an abundant number, since it is smaller than the sum of its proper divisors (113210028).

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

71032212 is a wasteful number, since it uses less digits than its factorization.

71032212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 71032212 is about 8428.0609869649. The cubic root of 71032212 is about 414.1443870807.

Adding to 71032212 its reverse (21223017), we get a palindrome (92255229).

The spelling of 71032212 in words is "seventy-one million, thirty-two thousand, two hundred twelve".