71443992 has 32 divisors (see below), whose sum is σ = 180457200. Its totient is φ = 23568384.

The previous prime is 71443987. The next prime is 71443997. The reversal of 71443992 is 29934417.

It is an interprime number because it is at equal distance from previous prime (71443987) and next prime (71443997).

It is a self number, because there is not a number n which added to its sum of digits gives 71443992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71443997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13017 + ... + 17672.

Almost surely, 2^71443992 is an apocalyptic number.

It is an amenable number.

71443992 is an abundant number, since it is smaller than the sum of its proper divisors (109013208).

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

71443992 is a wasteful number, since it uses less digits than its factorization.

71443992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30795 (or 30791 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 71443992 is about 8452.4547913609. The cubic root of 71443992 is about 414.9431227998.

The spelling of 71443992 in words is "seventy-one million, four hundred forty-three thousand, nine hundred ninety-two".