71540160 has 56 divisors (see below), whose sum is σ = 227143056. Its totient is φ = 19077120.

The previous prime is 71540159. The next prime is 71540179. The reversal of 71540160 is 6104517.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 71540160.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36301 + ... + 38220.

It is an arithmetic number, because the mean of its divisors is an integer number (4056126).

Almost surely, 2^71540160 is an apocalyptic number.

It is an amenable number.

71540160 is an abundant number, since it is smaller than the sum of its proper divisors (155602896).

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

71540160 is a wasteful number, since it uses less digits than its factorization.

71540160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74541 (or 74531 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 71540160 is about 8458.1416398639. The cubic root of 71540160 is about 415.1292189663.

Adding to 71540160 its reverse (6104517), we get a palindrome (77644677).

The spelling of 71540160 in words is "seventy-one million, five hundred forty thousand, one hundred sixty".