28318214 has 4 divisors (see below), whose sum is σ = 42477324. Its totient is φ = 14159106.

The previous prime is 28318211. The next prime is 28318217. The reversal of 28318214 is 41281382.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28318211) and next prime (28318217).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28318211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7079552 + ... + 7079555.

It is an arithmetic number, because the mean of its divisors is an integer number (10619331).

Almost surely, 2^28318214 is an apocalyptic number.

28318214 is a deficient number, since it is larger than the sum of its proper divisors (14159110).

28318214 is a wasteful number, since it uses less digits than its factorization.

28318214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14159109.

The product of its digits is 3072, while the sum is 29.

The square root of 28318214 is about 5321.4860706385. The cubic root of 28318214 is about 304.8049061401.

Adding to 28318214 its reverse (41281382), we get a palindrome (69599596).

The spelling of 28318214 in words is "twenty-eight million, three hundred eighteen thousand, two hundred fourteen".