71302380 has 48 divisors (see below), whose sum is σ = 200175360. Its totient is φ = 18963648.

The previous prime is 71302373. The next prime is 71302381. The reversal of 71302380 is 8320317.

It is a self number, because there is not a number n which added to its sum of digits gives 71302380.

It is not an unprimeable number, because it can be changed into a prime (71302381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24987 + ... + 27693.

It is an arithmetic number, because the mean of its divisors is an integer number (4170320).

Almost surely, 2^71302380 is an apocalyptic number.

It is an amenable number.

71302380 is an abundant number, since it is smaller than the sum of its proper divisors (128872980).

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

71302380 is a wasteful number, since it uses less digits than its factorization.

71302380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158 (or 3156 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 71302380 is about 8444.0736614504. The cubic root of 71302380 is about 414.6687829951.

Adding to 71302380 its reverse (8320317), we get a palindrome (79622697).

The spelling of 71302380 in words is "seventy-one million, three hundred two thousand, three hundred eighty".