71440368 has 80 divisors (see below), whose sum is σ = 195320832. Its totient is φ = 22464000.

The previous prime is 71440367. The next prime is 71440381. The reversal of 71440368 is 86304417.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71440367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60423 + ... + 61593.

Almost surely, 2^71440368 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 71440368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97660416).

71440368 is an abundant number, since it is smaller than the sum of its proper divisors (123880464).

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

71440368 is a wasteful number, since it uses less digits than its factorization.

71440368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254 (or 1248 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 71440368 is about 8452.2404130503. The cubic root of 71440368 is about 414.9361066778.

The spelling of 71440368 in words is "seventy-one million, four hundred forty thousand, three hundred sixty-eight".