71947243 has 16 divisors (see below), whose sum is σ = 80352000. Its totient is φ = 64104480.

The previous prime is 71947219. The next prime is 71947259. The reversal of 71947243 is 34274917.

It is not a de Polignac number, because 71947243 - 2⁹ = 71946731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71947543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25308 + ... + 28006.

It is an arithmetic number, because the mean of its divisors is an integer number (5022000).

Almost surely, 2^71947243 is an apocalyptic number.

71947243 is a deficient number, since it is larger than the sum of its proper divisors (8404757).

71947243 is a wasteful number, since it uses less digits than its factorization.

71947243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802.

The product of its digits is 42336, while the sum is 37.

The square root of 71947243 is about 8482.1720685211. The cubic root of 71947243 is about 415.9151296137.

The spelling of 71947243 in words is "seventy-one million, nine hundred forty-seven thousand, two hundred forty-three".