428162213 has 2 divisors, whose sum is σ = 428162214. Its totient is φ = 428162212.

The previous prime is 428162209. The next prime is 428162219. The reversal of 428162213 is 312261824.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287573764 + 140588449 = 16958^2 + 11857^2 .

It is a cyclic number.

It is not a de Polignac number, because 428162213 - 2² = 428162209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428162219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214081106 + 214081107.

It is an arithmetic number, because the mean of its divisors is an integer number (214081107).

Almost surely, 2^428162213 is an apocalyptic number.

It is an amenable number.

428162213 is a deficient number, since it is larger than the sum of its proper divisors (1).

428162213 is an equidigital number, since it uses as much as digits as its factorization.

428162213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 29.

The square root of 428162213 is about 20692.0809248369. The cubic root of 428162213 is about 753.7073992426.

The spelling of 428162213 in words is "four hundred twenty-eight million, one hundred sixty-two thousand, two hundred thirteen".