75239538 has 16 divisors (see below), whose sum is σ = 164159136. Its totient is φ = 22799840.

The previous prime is 75239533. The next prime is 75239557. The reversal of 75239538 is 83593257.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 75239538.

It is not an unprimeable number, because it can be changed into a prime (75239533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569931 + ... + 570062.

It is an arithmetic number, because the mean of its divisors is an integer number (10259946).

Almost surely, 2^75239538 is an apocalyptic number.

75239538 is an abundant number, since it is smaller than the sum of its proper divisors (88919598).

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

75239538 is a wasteful number, since it uses less digits than its factorization.

75239538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140009.

The product of its digits is 226800, while the sum is 42.

The square root of 75239538 is about 8674.0727458328. The cubic root of 75239538 is about 422.1648203538.

The spelling of 75239538 in words is "seventy-five million, two hundred thirty-nine thousand, five hundred thirty-eight".