71891283 has 8 divisors (see below), whose sum is σ = 101493648. Its totient is φ = 45108224.

The previous prime is 71891257. The next prime is 71891293. The reversal of 71891283 is 38219817.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71891283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71891213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704766 + ... + 704867.

It is an arithmetic number, because the mean of its divisors is an integer number (12686706).

Almost surely, 2^71891283 is an apocalyptic number.

71891283 is a deficient number, since it is larger than the sum of its proper divisors (29602365).

71891283 is a wasteful number, since it uses less digits than its factorization.

71891283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409653.

The product of its digits is 24192, while the sum is 39.

The square root of 71891283 is about 8478.8727434724. The cubic root of 71891283 is about 415.8072698053.

The spelling of 71891283 in words is "seventy-one million, eight hundred ninety-one thousand, two hundred eighty-three".