71347228 has 12 divisors (see below), whose sum is σ = 126721672. Its totient is φ = 35141040.

The previous prime is 71347217. The next prime is 71347231. The reversal of 71347228 is 82274317.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 71347193 and 71347202.

It is a congruent number.

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, 132843 + ... + 133378.

Almost surely, 2^71347228 is an apocalyptic number.

It is an amenable number.

71347228 is a deficient number, since it is larger than the sum of its proper divisors (55374444).

71347228 is a wasteful number, since it uses less digits than its factorization.

71347228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266292 (or 266290 counting only the distinct ones).

The product of its digits is 18816, while the sum is 34.

The square root of 71347228 is about 8446.7288342885. The cubic root of 71347228 is about 414.7557046745.

The spelling of 71347228 in words is "seventy-one million, three hundred forty-seven thousand, two hundred twenty-eight".