71845228 has 48 divisors (see below), whose sum is σ = 159760384. Its totient is φ = 27501120.

The previous prime is 71845219. The next prime is 71845229. The reversal of 71845228 is 82254817.

It is not an unprimeable number, because it can be changed into a prime (71845229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8101 + ... + 14467.

Almost surely, 2^71845228 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 71845228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79880192).

71845228 is an abundant number, since it is smaller than the sum of its proper divisors (87915156).

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

71845228 is a wasteful number, since it uses less digits than its factorization.

71845228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6422 (or 6420 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 71845228 is about 8476.1564402741. The cubic root of 71845228 is about 415.7184593415.

The spelling of 71845228 in words is "seventy-one million, eight hundred forty-five thousand, two hundred twenty-eight".