71409850 has 12 divisors (see below), whose sum is σ = 132822414. Its totient is φ = 28563920.

The previous prime is 71409839. The next prime is 71409857. The reversal of 71409850 is 5890417.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 51509329 + 19900521 = 7177^2 + 4461^2 .

It is not an unprimeable number, because it can be changed into a prime (71409857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 714049 + ... + 714148.

Almost surely, 2^71409850 is an apocalyptic number.

71409850 is a deficient number, since it is larger than the sum of its proper divisors (61412564).

71409850 is a wasteful number, since it uses less digits than its factorization.

71409850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428209 (or 1428204 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 71409850 is about 8450.4349000510. The cubic root of 71409850 is about 414.8770139266.

The spelling of 71409850 in words is "seventy-one million, four hundred nine thousand, eight hundred fifty".