71168280 has 64 divisors (see below), whose sum is σ = 215503200. Its totient is φ = 18800640.

The previous prime is 71168269. The next prime is 71168303. The reversal of 71168280 is 8286117.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 10360 + ... + 15800.

Almost surely, 2^71168280 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 71168280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107751600).

71168280 is an abundant number, since it is smaller than the sum of its proper divisors (144334920).

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

71168280 is a wasteful number, since it uses less digits than its factorization.

71168280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5564 (or 5560 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 71168280 is about 8436.1294442416. The cubic root of 71168280 is about 414.4086608656.

The spelling of 71168280 in words is "seventy-one million, one hundred sixty-eight thousand, two hundred eighty".