71449776 has 240 divisors, whose sum is σ = 233985024. Its totient is φ = 20984832.

The previous prime is 71449771. The next prime is 71449783. The reversal of 71449776 is 67794417.

It is not an unprimeable number, because it can be changed into a prime (71449771) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1520185 + ... + 1520231.

Almost surely, 2^71449776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71449776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116992512).

71449776 is an abundant number, since it is smaller than the sum of its proper divisors (162535248).

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

71449776 is a wasteful number, since it uses less digits than its factorization.

71449776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 92 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 71449776 is about 8452.7969335599. The cubic root of 71449776 is about 414.9543202250.

The spelling of 71449776 in words is "seventy-one million, four hundred forty-nine thousand, seven hundred seventy-six".