71798280 has 64 divisors (see below), whose sum is σ = 219067200. Its totient is φ = 18819840.

The previous prime is 71798273. The next prime is 71798291. The reversal of 71798280 is 8289717.

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, 2010 + ... + 12150.

It is an arithmetic number, because the mean of its divisors is an integer number (3422925).

Almost surely, 2^71798280 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 71798280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109533600).

71798280 is an abundant number, since it is smaller than the sum of its proper divisors (147268920).

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

71798280 is a wasteful number, since it uses less digits than its factorization.

71798280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10214 (or 10210 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 71798280 is about 8473.3865720856. The cubic root of 71798280 is about 415.6278877821.

The spelling of 71798280 in words is "seventy-one million, seven hundred ninety-eight thousand, two hundred eighty".