75328013 has 12 divisors (see below), whose sum is σ = 79419648. Its totient is φ = 71437080.

The previous prime is 75328007. The next prime is 75328021. The reversal of 75328013 is 31082357.

It is not a de Polignac number, because 75328013 - 2⁴ = 75327997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75328063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68756 + ... + 69842.

It is an arithmetic number, because the mean of its divisors is an integer number (6618304).

Almost surely, 2^75328013 is an apocalyptic number.

It is an amenable number.

75328013 is a deficient number, since it is larger than the sum of its proper divisors (4091635).

75328013 is a wasteful number, since it uses less digits than its factorization.

75328013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264 (or 1241 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 75328013 is about 8679.1712161934. The cubic root of 75328013 is about 422.3302316191.

The spelling of 75328013 in words is "seventy-five million, three hundred twenty-eight thousand, thirteen".