71243793 has 10 divisors (see below), whose sum is σ = 106426034. Its totient is φ = 47495808.

The previous prime is 71243789. The next prime is 71243801. The reversal of 71243793 is 39734217.

It can be written as a sum of positive squares in only one way, i.e., 38787984 + 32455809 = 6228^2 + 5697^2 .

It is not a de Polignac number, because 71243793 - 2² = 71243789 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71203793) 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 in 9 ways as a sum of consecutive naturals, for example, 439696 + ... + 439857.

Almost surely, 2^71243793 is an apocalyptic number.

It is an amenable number.

71243793 is a deficient number, since it is larger than the sum of its proper divisors (35182241).

71243793 is an equidigital number, since it uses as much as digits as its factorization.

71243793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879565 (or 879556 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 71243793 is about 8440.6038291108. The cubic root of 71243793 is about 414.5551782928. Note that the first 3 decimals are identical.

The spelling of 71243793 in words is "seventy-one million, two hundred forty-three thousand, seven hundred ninety-three".