28717214 has 16 divisors (see below), whose sum is σ = 43965936. Its totient is φ = 14064000.

The previous prime is 28717207. The next prime is 28717237. The reversal of 28717214 is 41271782.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 48629 + ... + 49215.

It is an arithmetic number, because the mean of its divisors is an integer number (2747871).

Almost surely, 2^28717214 is an apocalyptic number.

28717214 is a deficient number, since it is larger than the sum of its proper divisors (15248722).

28717214 is a wasteful number, since it uses less digits than its factorization.

28717214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051.

The product of its digits is 6272, while the sum is 32.

The square root of 28717214 is about 5358.8444649943. The cubic root of 28717214 is about 306.2297888092.

Adding to 28717214 its reverse (41271782), we get a palindrome (69988996).

The spelling of 28717214 in words is "twenty-eight million, seven hundred seventeen thousand, two hundred fourteen".