71286230 has 16 divisors (see below), whose sum is σ = 128412000. Its totient is φ = 28492992.

The previous prime is 71286209. The next prime is 71286239. The reversal of 71286230 is 3268217.

It is a happy number.

It is a super-2 number, since 2×71286230² = 10163453175225800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71286193 and 71286202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71286239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22271 + ... + 25269.

It is an arithmetic number, because the mean of its divisors is an integer number (8025750).

Almost surely, 2^71286230 is an apocalyptic number.

71286230 is a deficient number, since it is larger than the sum of its proper divisors (57125770).

71286230 is a wasteful number, since it uses less digits than its factorization.

71286230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5383.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 71286230 is about 8443.1173153048. The cubic root of 71286230 is about 414.6374731168.

The spelling of 71286230 in words is "seventy-one million, two hundred eighty-six thousand, two hundred thirty".