71995040 has 48 divisors (see below), whose sum is σ = 183177288. Its totient is φ = 26582016.

The previous prime is 71995003. The next prime is 71995061. The reversal of 71995040 is 4059917.

It can be written as a sum of positive squares in 4 ways, for example, as 40500496 + 31494544 = 6364^2 + 5612^2 .

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, 15227 + ... + 19386.

Almost surely, 2^71995040 is an apocalyptic number.

It is an amenable number.

71995040 is an abundant number, since it is smaller than the sum of its proper divisors (111182248).

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

71995040 is a wasteful number, since it uses less digits than its factorization.

71995040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34641 (or 34633 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 71995040 is about 8484.9890984020. The cubic root of 71995040 is about 416.0072114135.

It can be divided in two parts, 719 and 95040, that added together give a palindrome (95759).

The spelling of 71995040 in words is "seventy-one million, nine hundred ninety-five thousand, forty".