75028385 has 8 divisors (see below), whose sum is σ = 90291240. Its totient is φ = 59851264.

The previous prime is 75028381. The next prime is 75028417. The reversal of 75028385 is 58382057.

It can be written as a sum of positive squares in 4 ways, for example, as 21196816 + 53831569 = 4604^2 + 7337^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75028385 - 2² = 75028381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75028381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19490 + ... + 23019.

It is an arithmetic number, because the mean of its divisors is an integer number (11286405).

Almost surely, 2^75028385 is an apocalyptic number.

It is an amenable number.

75028385 is a deficient number, since it is larger than the sum of its proper divisors (15262855).

75028385 is a wasteful number, since it uses less digits than its factorization.

75028385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42867.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 75028385 is about 8661.8926915542. The cubic root of 75028385 is about 421.7695277988.

The spelling of 75028385 in words is "seventy-five million, twenty-eight thousand, three hundred eighty-five".