71057118 has 32 divisors (see below), whose sum is σ = 157357440. Its totient is φ = 21209760.

The previous prime is 71057099. The next prime is 71057123. The reversal of 71057118 is 81175017.

It is a happy number.

It is a super-4 number, since 4×71057118⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3613 + ... + 12456.

It is an arithmetic number, because the mean of its divisors is an integer number (4917420).

Almost surely, 2^71057118 is an apocalyptic number.

71057118 is an abundant number, since it is smaller than the sum of its proper divisors (86300322).

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

71057118 is a wasteful number, since it uses less digits than its factorization.

71057118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16152.

The product of its (nonzero) digits is 1960, while the sum is 30.

The square root of 71057118 is about 8429.5384215270. The cubic root of 71057118 is about 414.1927851924.

The spelling of 71057118 in words is "seventy-one million, fifty-seven thousand, one hundred eighteen".