28497959 has 24 divisors (see below), whose sum is σ = 34823808. Its totient is φ = 23224320.

The previous prime is 28497947. The next prime is 28497977. The reversal of 28497959 is 95979482.

It is a de Polignac number, because none of the positive numbers 2^k-28497959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28497959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28491959) 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 23 ways as a sum of consecutive naturals, for example, 110759 + ... + 111015.

It is an arithmetic number, because the mean of its divisors is an integer number (1450992).

Almost surely, 2^28497959 is an apocalyptic number.

28497959 is a deficient number, since it is larger than the sum of its proper divisors (6325849).

28497959 is a wasteful number, since it uses less digits than its factorization.

28497959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 368 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 53.

The square root of 28497959 is about 5338.3479654290. The cubic root of 28497959 is about 305.4484454011.

The spelling of 28497959 in words is "twenty-eight million, four hundred ninety-seven thousand, nine hundred fifty-nine".