75428005 has 8 divisors (see below), whose sum is σ = 95277600. Its totient is φ = 57166416.

The previous prime is 75427999. The next prime is 75428009. The reversal of 75428005 is 50082457.

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 75428005 - 2⁹ = 75427493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75428009) 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, 396895 + ... + 397084.

It is an arithmetic number, because the mean of its divisors is an integer number (11909700).

Almost surely, 2^75428005 is an apocalyptic number.

It is an amenable number.

75428005 is a deficient number, since it is larger than the sum of its proper divisors (19849595).

75428005 is a wasteful number, since it uses less digits than its factorization.

75428005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794003.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 75428005 is about 8684.9297636768. The cubic root of 75428005 is about 422.5170190266.

The spelling of 75428005 in words is "seventy-five million, four hundred twenty-eight thousand, five".