71888244 has 12 divisors (see below), whose sum is σ = 167739264. Its totient is φ = 23962744.

The previous prime is 71888233. The next prime is 71888261. The reversal of 71888244 is 44288817.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 71888196 and 71888205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2995332 + ... + 2995355.

It is an arithmetic number, because the mean of its divisors is an integer number (13978272).

Almost surely, 2^71888244 is an apocalyptic number.

It is an amenable number.

71888244 is an abundant number, since it is smaller than the sum of its proper divisors (95851020).

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

71888244 is a wasteful number, since it uses less digits than its factorization.

71888244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5990694 (or 5990692 counting only the distinct ones).

The product of its digits is 114688, while the sum is 42.

The square root of 71888244 is about 8478.6935314351. The cubic root of 71888244 is about 415.8014106986.

The spelling of 71888244 in words is "seventy-one million, eight hundred eighty-eight thousand, two hundred forty-four".