71339280 has 40 divisors (see below), whose sum is σ = 221152512. Its totient is φ = 19023744.

The previous prime is 71339269. The next prime is 71339287. The reversal of 71339280 is 8293317.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (71339287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148384 + ... + 148863.

Almost surely, 2^71339280 is an apocalyptic number.

It is an amenable number.

71339280 is an abundant number, since it is smaller than the sum of its proper divisors (149813232).

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

71339280 is a wasteful number, since it uses less digits than its factorization.

71339280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297263 (or 297257 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 71339280 is about 8446.2583431955. The cubic root of 71339280 is about 414.7403029981.

It can be divided in two parts, 713 and 39280, that added together give a palindrome (39993).

The spelling of 71339280 in words is "seventy-one million, three hundred thirty-nine thousand, two hundred eighty".