71205112 has 48 divisors (see below), whose sum is σ = 155418480. Its totient is φ = 30455040.

The previous prime is 71205097. The next prime is 71205139. The reversal of 71205112 is 21150217.

It is a self number, because there is not a number n which added to its sum of digits gives 71205112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14293 + ... + 18619.

It is an arithmetic number, because the mean of its divisors is an integer number (3237885).

Almost surely, 2^71205112 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 71205112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77709240).

71205112 is an abundant number, since it is smaller than the sum of its proper divisors (84213368).

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

71205112 is a wasteful number, since it uses less digits than its factorization.

71205112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4372 (or 4357 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 71205112 is about 8438.3121535056. The cubic root of 71205112 is about 414.4801387179.

Adding to 71205112 its reverse (21150217), we get a palindrome (92355329).

It can be divided in two parts, 71205 and 112, that added together give a palindrome (71317).

The spelling of 71205112 in words is "seventy-one million, two hundred five thousand, one hundred twelve".