71723532 has 12 divisors (see below), whose sum is σ = 167354936. Its totient is φ = 23907840.

The previous prime is 71723507. The next prime is 71723539. The reversal of 71723532 is 23532717.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 71723532.

It is not an unprimeable number, because it can be changed into a prime (71723539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2988469 + ... + 2988492.

Almost surely, 2^71723532 is an apocalyptic number.

It is an amenable number.

71723532 is an abundant number, since it is smaller than the sum of its proper divisors (95631404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71723532 is a wasteful number, since it uses less digits than its factorization.

71723532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5976968 (or 5976966 counting only the distinct ones).

The product of its digits is 8820, while the sum is 30.

The square root of 71723532 is about 8468.9746722965. The cubic root of 71723532 is about 415.4836032634.

The spelling of 71723532 in words is "seventy-one million, seven hundred twenty-three thousand, five hundred thirty-two".