28684597 has 4 divisors (see below), whose sum is σ = 28786240. Its totient is φ = 28582956.

The previous prime is 28684553. The next prime is 28684603. The reversal of 28684597 is 79548682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28684597 - 2¹⁹ = 28160309 is a prime.

It is a super-2 number, since 2×28684597² = 1645612210104818, which contains 22 as substring.

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 28684597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28684897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50397 + ... + 50962.

It is an arithmetic number, because the mean of its divisors is an integer number (7196560).

Almost surely, 2^28684597 is an apocalyptic number.

It is an amenable number.

28684597 is a deficient number, since it is larger than the sum of its proper divisors (101643).

28684597 is a wasteful number, since it uses less digits than its factorization.

28684597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101642.

The product of its digits is 967680, while the sum is 49.

The square root of 28684597 is about 5355.8003136786. The cubic root of 28684597 is about 306.1138063305.

The spelling of 28684597 in words is "twenty-eight million, six hundred eighty-four thousand, five hundred ninety-seven".