71440056 has 48 divisors (see below), whose sum is σ = 200655000. Its totient is φ = 23812704.

The previous prime is 71440051. The next prime is 71440073. The reversal of 71440056 is 65004417.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71440051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16431 + ... + 20318.

Almost surely, 2^71440056 is an apocalyptic number.

It is an amenable number.

71440056 is an abundant number, since it is smaller than the sum of its proper divisors (129214944).

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

71440056 is a wasteful number, since it uses less digits than its factorization.

71440056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36770 (or 36754 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 71440056 is about 8452.2219563852. The cubic root of 71440056 is about 414.9355026297.

The spelling of 71440056 in words is "seventy-one million, four hundred forty thousand, fifty-six".