71488944 has 240 divisors, whose sum is σ = 235029600. Its totient is φ = 20127744.

The previous prime is 71488939. The next prime is 71488957. The reversal of 71488944 is 44988417.

It is a super-2 number, since 2×71488944² = 10221338228470272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71488944.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1348822 + ... + 1348874.

It is an arithmetic number, because the mean of its divisors is an integer number (979290).

Almost surely, 2^71488944 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 71488944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117514800).

71488944 is an abundant number, since it is smaller than the sum of its proper divisors (163540656).

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

71488944 is a wasteful number, since it uses less digits than its factorization.

71488944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 123 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 71488944 is about 8455.1134823845. The cubic root of 71488944 is about 415.0301308747.

The spelling of 71488944 in words is "seventy-one million, four hundred eighty-eight thousand, nine hundred forty-four".