71440230 has 16 divisors (see below), whose sum is σ = 171456624. Its totient is φ = 19050720.

The previous prime is 71440223. The next prime is 71440249. The reversal of 71440230 is 3204417.

It is a junction number, because it is equal to n+sod(n) for n = 71440197 and 71440206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190641 + ... + 1190700.

It is an arithmetic number, because the mean of its divisors is an integer number (10716039).

Almost surely, 2^71440230 is an apocalyptic number.

71440230 is an abundant number, since it is smaller than the sum of its proper divisors (100016394).

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

71440230 is a wasteful number, since it uses less digits than its factorization.

71440230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381351.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 71440230 is about 8452.2322495303. The cubic root of 71440230 is about 414.9358395029.

Adding to 71440230 its reverse (3204417), we get a palindrome (74644647).

The spelling of 71440230 in words is "seventy-one million, four hundred forty thousand, two hundred thirty".