28031314 has 4 divisors (see below), whose sum is σ = 42046974. Its totient is φ = 14015656.

The previous prime is 28031309. The next prime is 28031321. The reversal of 28031314 is 41313082.

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., 19228225 + 8803089 = 4385^2 + 2967^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7007827 + ... + 7007830.

Almost surely, 2^28031314 is an apocalyptic number.

28031314 is a deficient number, since it is larger than the sum of its proper divisors (14015660).

28031314 is a wasteful number, since it uses less digits than its factorization.

28031314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14015659.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 28031314 is about 5294.4606901931. The cubic root of 28031314 is about 303.7720547134.

Adding to 28031314 its reverse (41313082), we get a palindrome (69344396).

The spelling of 28031314 in words is "twenty-eight million, thirty-one thousand, three hundred fourteen".