71265988 has 6 divisors (see below), whose sum is σ = 124715486. Its totient is φ = 35632992.

The previous prime is 71265977. The next prime is 71265991. The reversal of 71265988 is 88956217.

It can be written as a sum of positive squares in only one way, i.e., 38912644 + 32353344 = 6238^2 + 5688^2 .

It is a super-2 number, since 2×71265988² = 10157682091232288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8908245 + ... + 8908252.

Almost surely, 2^71265988 is an apocalyptic number.

It is an amenable number.

71265988 is a deficient number, since it is larger than the sum of its proper divisors (53449498).

71265988 is a wasteful number, since it uses less digits than its factorization.

71265988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17816501 (or 17816499 counting only the distinct ones).

The product of its digits is 241920, while the sum is 46.

The square root of 71265988 is about 8441.9185023311. The cubic root of 71265988 is about 414.5982234315.

The spelling of 71265988 in words is "seventy-one million, two hundred sixty-five thousand, nine hundred eighty-eight".