71943285 has 16 divisors (see below), whose sum is σ = 115245504. Its totient is φ = 38324352.

The previous prime is 71943283. The next prime is 71943317. The reversal of 71943285 is 58234917.

It is not a de Polignac number, because 71943285 - 2¹ = 71943283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71943283) 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, 13174 + ... + 17816.

It is an arithmetic number, because the mean of its divisors is an integer number (7202844).

Almost surely, 2^71943285 is an apocalyptic number.

It is an amenable number.

71943285 is a deficient number, since it is larger than the sum of its proper divisors (43302219).

71943285 is a wasteful number, since it uses less digits than its factorization.

71943285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5684.

The product of its digits is 60480, while the sum is 39.

The square root of 71943285 is about 8481.9387524315. The cubic root of 71943285 is about 415.9075026257.

The spelling of 71943285 in words is "seventy-one million, nine hundred forty-three thousand, two hundred eighty-five".