71612244 has 72 divisors (see below), whose sum is σ = 199049760. Its totient is φ = 21528000.

The previous prime is 71612171. The next prime is 71612249. The reversal of 71612244 is 44221617.

71612244 is a `hidden beast` number, since 7 + 1 + 612 + 2 + 44 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71612249) 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, 54394 + ... + 55694.

It is an arithmetic number, because the mean of its divisors is an integer number (2764580).

Almost surely, 2^71612244 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 71612244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99524880).

71612244 is an abundant number, since it is smaller than the sum of its proper divisors (127437516).

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

71612244 is a wasteful number, since it uses less digits than its factorization.

71612244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461 (or 1456 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 71612244 is about 8462.4017867270. The cubic root of 71612244 is about 415.2686004908.

The spelling of 71612244 in words is "seventy-one million, six hundred twelve thousand, two hundred forty-four".