71324730 has 48 divisors (see below), whose sum is σ = 186178824. Its totient is φ = 18944640.

The previous prime is 71324681. The next prime is 71324731. The reversal of 71324730 is 3742317.

It can be written as a sum of positive squares in 4 ways, for example, as 47734281 + 23590449 = 6909^2 + 4857^2 .

It is a junction number, because it is equal to n+sod(n) for n = 71324694 and 71324703.

It is not an unprimeable number, because it can be changed into a prime (71324731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23500 + ... + 26360.

Almost surely, 2^71324730 is an apocalyptic number.

71324730 is an abundant number, since it is smaller than the sum of its proper divisors (114854094).

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

71324730 is a wasteful number, since it uses less digits than its factorization.

71324730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3151 (or 3148 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 71324730 is about 8445.3969711317. The cubic root of 71324730 is about 414.7121049670.

The spelling of 71324730 in words is "seventy-one million, three hundred twenty-four thousand, seven hundred thirty".