75428717 has 16 divisors (see below), whose sum is σ = 93475200. Its totient is φ = 59268672.

The previous prime is 75428713. The next prime is 75428737. The reversal of 75428717 is 71782457.

It is a cyclic number.

It is not a de Polignac number, because 75428717 - 2² = 75428713 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75428713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10778 + ... + 16340.

It is an arithmetic number, because the mean of its divisors is an integer number (5842200).

Almost surely, 2^75428717 is an apocalyptic number.

It is an amenable number.

75428717 is a deficient number, since it is larger than the sum of its proper divisors (18046483).

75428717 is a wasteful number, since it uses less digits than its factorization.

75428717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732.

The product of its digits is 109760, while the sum is 41.

The square root of 75428717 is about 8684.9707541246. The cubic root of 75428717 is about 422.5183484673.

The spelling of 75428717 in words is "seventy-five million, four hundred twenty-eight thousand, seven hundred seventeen".