28857495 has 8 divisors (see below), whose sum is σ = 46172016. Its totient is φ = 15390656.

The previous prime is 28857487. The next prime is 28857509. The reversal of 28857495 is 59475882.

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 28857495 - 2³ = 28857487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 961902 + ... + 961931.

It is an arithmetic number, because the mean of its divisors is an integer number (5771502).

Almost surely, 2^28857495 is an apocalyptic number.

28857495 is a deficient number, since it is larger than the sum of its proper divisors (17314521).

28857495 is a wasteful number, since it uses less digits than its factorization.

28857495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923841.

The product of its digits is 806400, while the sum is 48.

The square root of 28857495 is about 5371.9172555057. The cubic root of 28857495 is about 306.7276140416.

The spelling of 28857495 in words is "twenty-eight million, eight hundred fifty-seven thousand, four hundred ninety-five".