71034140 has 24 divisors (see below), whose sum is σ = 152811792. Its totient is φ = 27720320.

The previous prime is 71034091. The next prime is 71034199. The reversal of 71034140 is 4143017.

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

It is a congruent number.

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, 42494 + ... + 44133.

It is an arithmetic number, because the mean of its divisors is an integer number (6367158).

Almost surely, 2^71034140 is an apocalyptic number.

It is an amenable number.

71034140 is an abundant number, since it is smaller than the sum of its proper divisors (81777652).

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

71034140 is a wasteful number, since it uses less digits than its factorization.

71034140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86677 (or 86675 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 71034140 is about 8428.1753659971. The cubic root of 71034140 is about 414.1481340340.

Adding to 71034140 its reverse (4143017), we get a palindrome (75177157).

The spelling of 71034140 in words is "seventy-one million, thirty-four thousand, one hundred forty".