71535228 has 96 divisors (see below), whose sum is σ = 188160000. Its totient is φ = 21047040.

The previous prime is 71535203. The next prime is 71535229. The reversal of 71535228 is 82253517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71535229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204798 + ... + 205146.

It is an arithmetic number, because the mean of its divisors is an integer number (1960000).

Almost surely, 2^71535228 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 71535228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94080000).

71535228 is an abundant number, since it is smaller than the sum of its proper divisors (116624772).

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

71535228 is a wasteful number, since it uses less digits than its factorization.

71535228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 433 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 71535228 is about 8457.8500814332. The cubic root of 71535228 is about 415.1196790363.

The spelling of 71535228 in words is "seventy-one million, five hundred thirty-five thousand, two hundred twenty-eight".