428268613 has 2 divisors, whose sum is σ = 428268614. Its totient is φ = 428268612.

The previous prime is 428268587. The next prime is 428268619. The reversal of 428268613 is 316862824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391762849 + 36505764 = 19793^2 + 6042^2 .

It is a cyclic number.

It is not a de Polignac number, because 428268613 - 2²⁵ = 394714181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428268619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214134306 + 214134307.

It is an arithmetic number, because the mean of its divisors is an integer number (214134307).

Almost surely, 2^428268613 is an apocalyptic number.

It is an amenable number.

428268613 is a deficient number, since it is larger than the sum of its proper divisors (1).

428268613 is an equidigital number, since it uses as much as digits as its factorization.

428268613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 40.

The square root of 428268613 is about 20694.6517970223. The cubic root of 428268613 is about 753.7698271596.

The spelling of 428268613 in words is "four hundred twenty-eight million, two hundred sixty-eight thousand, six hundred thirteen".