71223332 has 6 divisors (see below), whose sum is σ = 124640838. Its totient is φ = 35611664.

The previous prime is 71223331. The next prime is 71223359. The reversal of 71223332 is 23332217.

It can be written as a sum of positive squares in only one way, i.e., 60621796 + 10601536 = 7786^2 + 3256^2 .

It is a junction number, because it is equal to n+sod(n) for n = 71223298 and 71223307.

It is not an unprimeable number, because it can be changed into a prime (71223331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8902913 + ... + 8902920.

It is an arithmetic number, because the mean of its divisors is an integer number (20773473).

Almost surely, 2^71223332 is an apocalyptic number.

It is an amenable number.

71223332 is a deficient number, since it is larger than the sum of its proper divisors (53417506).

71223332 is a wasteful number, since it uses less digits than its factorization.

71223332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17805837 (or 17805835 counting only the distinct ones).

The product of its digits is 1512, while the sum is 23.

The square root of 71223332 is about 8439.3916842389. The cubic root of 71223332 is about 414.5154881654.

Adding to 71223332 its reverse (23332217), we get a palindrome (94555549).

The spelling of 71223332 in words is "seventy-one million, two hundred twenty-three thousand, three hundred thirty-two".