71248944 has 80 divisors (see below), whose sum is σ = 199487232. Its totient is φ = 21782784.

The previous prime is 71248913. The next prime is 71248951. The reversal of 71248944 is 44984217.

It is a super-2 number, since 2×71248944² = 10152824042230272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141397 + ... + 141899.

Almost surely, 2^71248944 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 71248944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99743616).

71248944 is an abundant number, since it is smaller than the sum of its proper divisors (128238288).

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

71248944 is a wasteful number, since it uses less digits than its factorization.

71248944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 748 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 71248944 is about 8440.9089557938. The cubic root of 71248944 is about 414.5651689749.

The spelling of 71248944 in words is "seventy-one million, two hundred forty-eight thousand, nine hundred forty-four".