71738523 has 24 divisors (see below), whose sum is σ = 107032016. Its totient is φ = 46267200.

The previous prime is 71738473. The next prime is 71738533. The reversal of 71738523 is 32583717.

It is not a de Polignac number, because 71738523 - 2⁸ = 71738267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71738533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69753 + ... + 70773.

Almost surely, 2^71738523 is an apocalyptic number.

71738523 is a deficient number, since it is larger than the sum of its proper divisors (35293493).

71738523 is a wasteful number, since it uses less digits than its factorization.

71738523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275 (or 1272 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 71738523 is about 8469.8596800655. The cubic root of 71738523 is about 415.5125481142.

The spelling of 71738523 in words is "seventy-one million, seven hundred thirty-eight thousand, five hundred twenty-three".