71265228 has 24 divisors (see below), whose sum is σ = 168565488. Its totient is φ = 23429376.

The previous prime is 71265223. The next prime is 71265251. The reversal of 71265228 is 82256217.

It is not an unprimeable number, because it can be changed into a prime (71265223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39801 + ... + 41552.

It is an arithmetic number, because the mean of its divisors is an integer number (7023562).

Almost surely, 2^71265228 is an apocalyptic number.

It is an amenable number.

71265228 is an abundant number, since it is smaller than the sum of its proper divisors (97300260).

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

71265228 is a wasteful number, since it uses less digits than its factorization.

71265228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81433 (or 81431 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 71265228 is about 8441.8734887464. The cubic root of 71265228 is about 414.5967496299.

The spelling of 71265228 in words is "seventy-one million, two hundred sixty-five thousand, two hundred twenty-eight".