28383215 has 8 divisors (see below), whose sum is σ = 38925600. Its totient is φ = 19462752.

The previous prime is 28383191. The next prime is 28383221. The reversal of 28383215 is 51238382.

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

It is a cyclic number.

It is not a de Polignac number, because 28383215 - 2¹⁰ = 28382191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405440 + ... + 405509.

It is an arithmetic number, because the mean of its divisors is an integer number (4865700).

Almost surely, 2^28383215 is an apocalyptic number.

28383215 is a deficient number, since it is larger than the sum of its proper divisors (10542385).

28383215 is an equidigital number, since it uses as much as digits as its factorization.

28383215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810961.

The product of its digits is 11520, while the sum is 32.

The square root of 28383215 is about 5327.5899804696. The cubic root of 28383215 is about 305.0379420683.

The spelling of 28383215 in words is "twenty-eight million, three hundred eighty-three thousand, two hundred fifteen".