71573228 has 12 divisors (see below), whose sum is σ = 131845560. Its totient is φ = 33903072.

The previous prime is 71573149. The next prime is 71573231. The reversal of 71573228 is 82237517.

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470801 + ... + 470952.

It is an arithmetic number, because the mean of its divisors is an integer number (10987130).

Almost surely, 2^71573228 is an apocalyptic number.

It is an amenable number.

71573228 is a deficient number, since it is larger than the sum of its proper divisors (60272332).

71573228 is a wasteful number, since it uses less digits than its factorization.

71573228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941776 (or 941774 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 71573228 is about 8460.0962169469. The cubic root of 71573228 is about 415.1931708243.

The spelling of 71573228 in words is "seventy-one million, five hundred seventy-three thousand, two hundred twenty-eight".