71144746 has 16 divisors (see below), whose sum is σ = 109267200. Its totient is φ = 34726320.

The previous prime is 71144729. The next prime is 71144761. The reversal of 71144746 is 64744117.

It is an unprimeable number.

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, 50155 + ... + 51553.

It is an arithmetic number, because the mean of its divisors is an integer number (6829200).

Almost surely, 2^71144746 is an apocalyptic number.

71144746 is a deficient number, since it is larger than the sum of its proper divisors (38122454).

71144746 is a wasteful number, since it uses less digits than its factorization.

71144746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989.

The product of its digits is 18816, while the sum is 34.

The square root of 71144746 is about 8434.7344949323. The cubic root of 71144746 is about 414.3629768023.

The spelling of 71144746 in words is "seventy-one million, one hundred forty-four thousand, seven hundred forty-six".