75478730 has 16 divisors (see below), whose sum is σ = 136074600. Its totient is φ = 30144192.

The previous prime is 75478699. The next prime is 75478747. The reversal of 75478730 is 3787457.

It can be written as a sum of positive squares in 4 ways, for example, as 72199009 + 3279721 = 8497^2 + 1811^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1196 + ... + 12344.

Almost surely, 2^75478730 is an apocalyptic number.

75478730 is a deficient number, since it is larger than the sum of its proper divisors (60595870).

75478730 is a wasteful number, since it uses less digits than its factorization.

75478730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11833.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 75478730 is about 8687.8495613126. The cubic root of 75478730 is about 422.6117114124.

The spelling of 75478730 in words is "seventy-five million, four hundred seventy-eight thousand, seven hundred thirty".