71448412 has 12 divisors (see below), whose sum is σ = 142896880. Its totient is φ = 30620736.

The previous prime is 71448389. The next prime is 71448427. The reversal of 71448412 is 21484417.

It is a happy number.

71448412 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1275837 + ... + 1275892.

Almost surely, 2^71448412 is an apocalyptic number.

It is an amenable number.

71448412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

71448412 is a wasteful number, since it uses less digits than its factorization.

71448412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551740 (or 2551738 counting only the distinct ones).

The product of its digits is 7168, while the sum is 31.

The square root of 71448412 is about 8452.7162498217. The cubic root of 71448412 is about 414.9516796695.

The spelling of 71448412 in words is "seventy-one million, four hundred forty-eight thousand, four hundred twelve".