28475957 has 8 divisors (see below), whose sum is σ = 28812000. Its totient is φ = 28142064.

The previous prime is 28475917. The next prime is 28475963. The reversal of 28475957 is 75957482.

It is a happy number.

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 28475957 - 2²⁰ = 27427381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28475917) 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, 48218 + ... + 48804.

It is an arithmetic number, because the mean of its divisors is an integer number (3601500).

Almost surely, 2^28475957 is an apocalyptic number.

It is an amenable number.

28475957 is a deficient number, since it is larger than the sum of its proper divisors (336043).

28475957 is a wasteful number, since it uses less digits than its factorization.

28475957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075.

The product of its digits is 705600, while the sum is 47.

The square root of 28475957 is about 5336.2868176289. The cubic root of 28475957 is about 305.3698174666.

The spelling of 28475957 in words is "twenty-eight million, four hundred seventy-five thousand, nine hundred fifty-seven".