28284693 has 8 divisors (see below), whose sum is σ = 37984800. Its totient is φ = 18720528.

The previous prime is 28284677. The next prime is 28284709. The reversal of 28284693 is 39648282.

It is an interprime number because it is at equal distance from previous prime (28284677) and next prime (28284709).

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

It is not a de Polignac number, because 28284693 - 2⁴ = 28284677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28284643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33498 + ... + 34331.

It is an arithmetic number, because the mean of its divisors is an integer number (4748100).

Almost surely, 2^28284693 is an apocalyptic number.

It is an amenable number.

28284693 is a deficient number, since it is larger than the sum of its proper divisors (9700107).

28284693 is a wasteful number, since it uses less digits than its factorization.

28284693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67971.

The product of its digits is 165888, while the sum is 42.

The square root of 28284693 is about 5318.3355478947. The cubic root of 28284693 is about 304.6845901787.

The spelling of 28284693 in words is "twenty-eight million, two hundred eighty-four thousand, six hundred ninety-three".