28638314 has 4 divisors (see below), whose sum is σ = 42957474. Its totient is φ = 14319156.

The previous prime is 28638307. The next prime is 28638317. The reversal of 28638314 is 41383682.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 23687689 + 4950625 = 4867^2 + 2225^2 .

It is not an unprimeable number, because it can be changed into a prime (28638317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7159577 + ... + 7159580.

Almost surely, 2^28638314 is an apocalyptic number.

28638314 is a deficient number, since it is larger than the sum of its proper divisors (14319160).

28638314 is a wasteful number, since it uses less digits than its factorization.

28638314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14319159.

The product of its digits is 27648, while the sum is 35.

The square root of 28638314 is about 5351.4777398397. The cubic root of 28638314 is about 305.9490780601.

The spelling of 28638314 in words is "twenty-eight million, six hundred thirty-eight thousand, three hundred fourteen".