28663214 has 8 divisors (see below), whose sum is σ = 43036920. Its totient is φ = 14317576.

The previous prime is 28663213. The next prime is 28663237. The reversal of 28663214 is 41236682.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28663213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4244 + ... + 8679.

It is an arithmetic number, because the mean of its divisors is an integer number (5379615).

Almost surely, 2^28663214 is an apocalyptic number.

28663214 is a deficient number, since it is larger than the sum of its proper divisors (14373706).

28663214 is a wasteful number, since it uses less digits than its factorization.

28663214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14034.

The product of its digits is 13824, while the sum is 32.

The square root of 28663214 is about 5353.8036945708. The cubic root of 28663214 is about 306.0377230040.

Adding to 28663214 its reverse (41236682), we get a palindrome (69899896).

The spelling of 28663214 in words is "twenty-eight million, six hundred sixty-three thousand, two hundred fourteen".