214728911 has 2 divisors, whose sum is σ = 214728912. Its totient is φ = 214728910.

The previous prime is 214728883. The next prime is 214728919. The reversal of 214728911 is 119827412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 214728911 - 2¹⁴ = 214712527 is a prime.

It is a super-2 number, since 2×214728911² = 92217010438491842, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214728919) 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, 107364455 + 107364456.

It is an arithmetic number, because the mean of its divisors is an integer number (107364456).

Almost surely, 2^214728911 is an apocalyptic number.

214728911 is a deficient number, since it is larger than the sum of its proper divisors (1).

214728911 is an equidigital number, since it uses as much as digits as its factorization.

214728911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 35.

The square root of 214728911 is about 14653.6313246922. The cubic root of 214728911 is about 598.8207495398.

The spelling of 214728911 in words is "two hundred fourteen million, seven hundred twenty-eight thousand, nine hundred eleven".