71324280 has 64 divisors (see below), whose sum is σ = 237751200. Its totient is φ = 19019520.

The previous prime is 71324269. The next prime is 71324291. The reversal of 71324280 is 8242317.

It is an interprime number because it is at equal distance from previous prime (71324269) and next prime (71324291).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 31941 + ... + 34100.

Almost surely, 2^71324280 is an apocalyptic number.

It is an amenable number.

71324280 is an abundant number, since it is smaller than the sum of its proper divisors (166426920).

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

71324280 is a wasteful number, since it uses less digits than its factorization.

71324280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66061 (or 66051 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 71324280 is about 8445.3703293580. The cubic root of 71324280 is about 414.7112328018.

Adding to 71324280 its reverse (8242317), we get a palindrome (79566597).

The spelling of 71324280 in words is "seventy-one million, three hundred twenty-four thousand, two hundred eighty".