28714219 has 2 divisors, whose sum is σ = 28714220. Its totient is φ = 28714218.

The previous prime is 28714193. The next prime is 28714223. The reversal of 28714219 is 91241782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28714219 - 2¹¹ = 28712171 is a prime.

It is a super-2 number, since 2×28714219² = 1649012745559922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28714229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14357109 + 14357110.

It is an arithmetic number, because the mean of its divisors is an integer number (14357110).

Almost surely, 2^28714219 is an apocalyptic number.

28714219 is a deficient number, since it is larger than the sum of its proper divisors (1).

28714219 is an equidigital number, since it uses as much as digits as its factorization.

28714219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 34.

The square root of 28714219 is about 5358.5650131355. The cubic root of 28714219 is about 306.2191425802.

The spelling of 28714219 in words is "twenty-eight million, seven hundred fourteen thousand, two hundred nineteen".