71268018 has 8 divisors (see below), whose sum is σ = 142536048. Its totient is φ = 23756004.

The previous prime is 71267983. The next prime is 71268019. The reversal of 71268018 is 81086217.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

71268018 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 71268018.

It is not an unprimeable number, because it can be changed into a prime (71268019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5938996 + ... + 5939007.

It is an arithmetic number, because the mean of its divisors is an integer number (17817006).

Almost surely, 2^71268018 is an apocalyptic number.

71268018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

71268018 is a wasteful number, since it uses less digits than its factorization.

71268018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11878008.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 71268018 is about 8442.0387348081. The cubic root of 71268018 is about 414.6021599816.

The spelling of 71268018 in words is "seventy-one million, two hundred sixty-eight thousand, eighteen".