71433530 has 32 divisors (see below), whose sum is σ = 147795840. Its totient is φ = 24350400.

The previous prime is 71433529. The next prime is 71433539. The reversal of 71433530 is 3533417.

It is a self number, because there is not a number n which added to its sum of digits gives 71433530.

It is not an unprimeable number, because it can be changed into a prime (71433539) 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, 9680 + ... + 15380.

It is an arithmetic number, because the mean of its divisors is an integer number (4618620).

Almost surely, 2^71433530 is an apocalyptic number.

71433530 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71433530 is an abundant number, since it is smaller than the sum of its proper divisors (76362310).

71433530 is a wasteful number, since it uses less digits than its factorization.

71433530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5894.

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 71433530 is about 8451.8358952360. The cubic root of 71433530 is about 414.9228675540.

Adding to 71433530 its reverse (3533417), we get a palindrome (74966947).

The spelling of 71433530 in words is "seventy-one million, four hundred thirty-three thousand, five hundred thirty".