71116040 has 32 divisors (see below), whose sum is σ = 160263360. Its totient is φ = 28401600.

The previous prime is 71116021. The next prime is 71116051. The reversal of 71116040 is 4061117.

It is a super-2 number, since 2×71116040² = 10114982290563200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37925 + ... + 39755.

It is an arithmetic number, because the mean of its divisors is an integer number (5008230).

Almost surely, 2^71116040 is an apocalyptic number.

It is an amenable number.

71116040 is an abundant number, since it is smaller than the sum of its proper divisors (89147320).

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

71116040 is a wasteful number, since it uses less digits than its factorization.

71116040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813 (or 2809 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 71116040 is about 8433.0326692122. The cubic root of 71116040 is about 414.3072392417.

Adding to 71116040 its reverse (4061117), we get a palindrome (75177157).

The spelling of 71116040 in words is "seventy-one million, one hundred sixteen thousand, forty".