427728167 has 2 divisors, whose sum is σ = 427728168. Its totient is φ = 427728166.

The previous prime is 427728127. The next prime is 427728227. The reversal of 427728167 is 761827724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427728167 - 2¹⁸ = 427466023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427728127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213864083 + 213864084.

It is an arithmetic number, because the mean of its divisors is an integer number (213864084).

Almost surely, 2^427728167 is an apocalyptic number.

427728167 is a deficient number, since it is larger than the sum of its proper divisors (1).

427728167 is an equidigital number, since it uses as much as digits as its factorization.

427728167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 263424, while the sum is 44.

The square root of 427728167 is about 20681.5900500904. The cubic root of 427728167 is about 753.4526248599.

The spelling of 427728167 in words is "four hundred twenty-seven million, seven hundred twenty-eight thousand, one hundred sixty-seven".