71030356 has 12 divisors (see below), whose sum is σ = 124365780. Its totient is φ = 35497280.

The previous prime is 71030353. The next prime is 71030357. The reversal of 71030356 is 65303017.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1040400 + 69989956 = 1020^2 + 8366^2 .

It is a super-2 number, since 2×71030356² = 10090622946973472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71030356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71030353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8886 + ... + 14866.

It is an arithmetic number, because the mean of its divisors is an integer number (10363815).

Almost surely, 2^71030356 is an apocalyptic number.

It is an amenable number.

71030356 is a deficient number, since it is larger than the sum of its proper divisors (53335424).

71030356 is a wasteful number, since it uses less digits than its factorization.

71030356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8954 (or 8952 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 71030356 is about 8427.9508778825. The cubic root of 71030356 is about 414.1407799910.

The spelling of 71030356 in words is "seventy-one million, thirty thousand, three hundred fifty-six".