28216079 has 2 divisors, whose sum is σ = 28216080. Its totient is φ = 28216078.

The previous prime is 28216049. The next prime is 28216091. The reversal of 28216079 is 97061282.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28216079 - 2¹⁶ = 28150543 is a prime.

It is a super-2 number, since 2×28216079² = 1592294228268482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28216049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14108039 + 14108040.

It is an arithmetic number, because the mean of its divisors is an integer number (14108040).

Almost surely, 2^28216079 is an apocalyptic number.

28216079 is a deficient number, since it is larger than the sum of its proper divisors (1).

28216079 is an equidigital number, since it uses as much as digits as its factorization.

28216079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 28216079 is about 5311.8809286354. The cubic root of 28216079 is about 304.4380191703.

It can be divided in two parts, 282 and 16079, that added together give a palindrome (16361).

The spelling of 28216079 in words is "twenty-eight million, two hundred sixteen thousand, seventy-nine".