71191368 has 48 divisors (see below), whose sum is σ = 193244220. Its totient is φ = 23677056.

The previous prime is 71191361. The next prime is 71191387. The reversal of 71191368 is 86319117.

It can be written as a sum of positive squares in 2 ways, for example, as 64931364 + 6260004 = 8058^2 + 2502^2 .

It is a super-2 number, since 2×71191368² = 10136421755422848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (71191361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43330 + ... + 44942.

Almost surely, 2^71191368 is an apocalyptic number.

It is an amenable number.

71191368 is an abundant number, since it is smaller than the sum of its proper divisors (122052852).

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

71191368 is a wasteful number, since it uses less digits than its factorization.

71191368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238 (or 2231 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 71191368 is about 8437.4977333330. The cubic root of 71191368 is about 414.4534693706.

The spelling of 71191368 in words is "seventy-one million, one hundred ninety-one thousand, three hundred sixty-eight".