28114215 has 16 divisors (see below), whose sum is σ = 45061728. Its totient is φ = 14967936.

The previous prime is 28114213. The next prime is 28114231. The reversal of 28114215 is 51241182.

It is not a de Polignac number, because 28114215 - 2¹ = 28114213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28114213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9717 + ... + 12273.

It is an arithmetic number, because the mean of its divisors is an integer number (2816358).

Almost surely, 2^28114215 is an apocalyptic number.

28114215 is a deficient number, since it is larger than the sum of its proper divisors (16947513).

28114215 is a wasteful number, since it uses less digits than its factorization.

28114215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3298.

The product of its digits is 640, while the sum is 24.

The square root of 28114215 is about 5302.2839418500. The cubic root of 28114215 is about 304.0712227801.

Adding to 28114215 its reverse (51241182), we get a palindrome (79355397).

The spelling of 28114215 in words is "twenty-eight million, one hundred fourteen thousand, two hundred fifteen".