28657959 has 8 divisors (see below), whose sum is σ = 41684352. Its totient is φ = 17368440.

The previous prime is 28657949. The next prime is 28657973. The reversal of 28657959 is 95975682.

It is a happy number.

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

It is not a de Polignac number, because 28657959 - 2¹⁷ = 28526887 is a prime.

It is a super-2 number, since 2×28657959² = 1642557228091362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28657939) by changing a digit.

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, 434179 + ... + 434244.

It is an arithmetic number, because the mean of its divisors is an integer number (5210544).

Almost surely, 2^28657959 is an apocalyptic number.

28657959 is a deficient number, since it is larger than the sum of its proper divisors (13026393).

28657959 is a wasteful number, since it uses less digits than its factorization.

28657959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868437.

The product of its digits is 1360800, while the sum is 51.

The square root of 28657959 is about 5353.3128995044. The cubic root of 28657959 is about 306.0190192801.

The spelling of 28657959 in words is "twenty-eight million, six hundred fifty-seven thousand, nine hundred fifty-nine".