28402214 has 8 divisors (see below), whose sum is σ = 43082280. Its totient is φ = 14041456.

The previous prime is 28402177. The next prime is 28402219. The reversal of 28402214 is 41220482.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28402214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28402219) 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 3 ways as a sum of consecutive naturals, for example, 79604 + ... + 79959.

It is an arithmetic number, because the mean of its divisors is an integer number (5385285).

Almost surely, 2^28402214 is an apocalyptic number.

28402214 is a deficient number, since it is larger than the sum of its proper divisors (14680066).

28402214 is a wasteful number, since it uses less digits than its factorization.

28402214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159654.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 28402214 is about 5329.3727585899. The cubic root of 28402214 is about 305.1059884265.

Adding to 28402214 its reverse (41220482), we get a palindrome (69622696).

The spelling of 28402214 in words is "twenty-eight million, four hundred two thousand, two hundred fourteen".