28890314 has 4 divisors (see below), whose sum is σ = 43335474. Its totient is φ = 14445156.

The previous prime is 28890311. The next prime is 28890349. The reversal of 28890314 is 41309882.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41309882 = 2 ⋅20654941.

It can be written as a sum of positive squares in only one way, i.e., 21464689 + 7425625 = 4633^2 + 2725^2 .

It is not an unprimeable number, because it can be changed into a prime (28890311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7222577 + ... + 7222580.

Almost surely, 2^28890314 is an apocalyptic number.

28890314 is a deficient number, since it is larger than the sum of its proper divisors (14445160).

28890314 is a wasteful number, since it uses less digits than its factorization.

28890314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14445159.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 28890314 is about 5374.9710696896. The cubic root of 28890314 is about 306.8438481990.

The spelling of 28890314 in words is "twenty-eight million, eight hundred ninety thousand, three hundred fourteen".