71554730 has 32 divisors (see below), whose sum is σ = 139518288. Its totient is φ = 26265600.

The previous prime is 71554729. The next prime is 71554733. The reversal of 71554730 is 3745517.

It can be written as a sum of positive squares in 8 ways, for example, as 16394401 + 55160329 = 4049^2 + 7427^2 .

It is not an unprimeable number, because it can be changed into a prime (71554733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22010 + ... + 25050.

Almost surely, 2^71554730 is an apocalyptic number.

71554730 is a deficient number, since it is larger than the sum of its proper divisors (67963558).

71554730 is a wasteful number, since it uses less digits than its factorization.

71554730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 71554730 is about 8459.0028963229. The cubic root of 71554730 is about 415.1573990456.

The spelling of 71554730 in words is "seventy-one million, five hundred fifty-four thousand, seven hundred thirty".