71172232 has 16 divisors (see below), whose sum is σ = 134948700. Its totient is φ = 35185920.

The previous prime is 71172229. The next prime is 71172253. The reversal of 71172232 is 23227117.

It can be written as a sum of positive squares in 2 ways, for example, as 65383396 + 5788836 = 8086^2 + 2406^2 .

It is a junction number, because it is equal to n+sod(n) for n = 71172197 and 71172206.

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, 49269 + ... + 50692.

Almost surely, 2^71172232 is an apocalyptic number.

It is an amenable number.

71172232 is a deficient number, since it is larger than the sum of its proper divisors (63776468).

71172232 is a wasteful number, since it uses less digits than its factorization.

71172232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100056 (or 100052 counting only the distinct ones).

The product of its digits is 1176, while the sum is 25.

The square root of 71172232 is about 8436.3636716301. The cubic root of 71172232 is about 414.4163314772.

Adding to 71172232 its reverse (23227117), we get a palindrome (94399349).

The spelling of 71172232 in words is "seventy-one million, one hundred seventy-two thousand, two hundred thirty-two".