28353813 has 8 divisors (see below), whose sum is σ = 38684448. Its totient is φ = 18462864.

The previous prime is 28353751. The next prime is 28353817. The reversal of 28353813 is 31835382.

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

It is not a de Polignac number, because 28353813 - 2⁶ = 28353749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28353817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109770 + ... + 110027.

It is an arithmetic number, because the mean of its divisors is an integer number (4835556).

Almost surely, 2^28353813 is an apocalyptic number.

It is an amenable number.

28353813 is a deficient number, since it is larger than the sum of its proper divisors (10330635).

28353813 is a wasteful number, since it uses less digits than its factorization.

28353813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219843.

The product of its digits is 17280, while the sum is 33.

The square root of 28353813 is about 5324.8298564367. The cubic root of 28353813 is about 304.9325766937.

The spelling of 28353813 in words is "twenty-eight million, three hundred fifty-three thousand, eight hundred thirteen".