28216353 has 12 divisors (see below), whose sum is σ = 41353424. Its totient is φ = 17100600.

The previous prime is 28216339. The next prime is 28216361. The reversal of 28216353 is 35361282.

It is not a de Polignac number, because 28216353 - 2¹³ = 28208161 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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 28216353.

It is not an unprimeable number, because it can be changed into a prime (28216303) 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 11 ways as a sum of consecutive naturals, for example, 38503 + ... + 39228.

Almost surely, 2^28216353 is an apocalyptic number.

It is an amenable number.

28216353 is a deficient number, since it is larger than the sum of its proper divisors (13137071).

28216353 is a wasteful number, since it uses less digits than its factorization.

28216353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77756 (or 77745 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 28216353 is about 5311.9067198135. The cubic root of 28216353 is about 304.4390046101.

Subtracting 28216353 from its reverse (35361282), we obtain a square (7144929 = 2673²).

The spelling of 28216353 in words is "twenty-eight million, two hundred sixteen thousand, three hundred fifty-three".