71351730 has 24 divisors (see below), whose sum is σ = 185514732. Its totient is φ = 19027104.

The previous prime is 71351729. The next prime is 71351747. The reversal of 71351730 is 3715317.

It can be written as a sum of positive squares in 2 ways, for example, as 70610409 + 741321 = 8403^2 + 861^2 .

It is a junction number, because it is equal to n+sod(n) for n = 71351694 and 71351703.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396309 + ... + 396488.

Almost surely, 2^71351730 is an apocalyptic number.

71351730 is an abundant number, since it is smaller than the sum of its proper divisors (114163002).

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

71351730 is a wasteful number, since it uses less digits than its factorization.

71351730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792810 (or 792807 counting only the distinct ones).

The product of its (nonzero) digits is 2205, while the sum is 27.

The square root of 71351730 is about 8446.9953237823. The cubic root of 71351730 is about 414.7644281665.

The spelling of 71351730 in words is "seventy-one million, three hundred fifty-one thousand, seven hundred thirty".