428111613 has 6 divisors (see below), whose sum is σ = 618383454. Its totient is φ = 285407736.

The previous prime is 428111599. The next prime is 428111623. The reversal of 428111613 is 316111824.

It is a happy number.

428111613 is a `hidden beast` number, since 42 + 8 + 1 + 1 + 1 + 613 = 666.

It can be written as a sum of positive squares in only one way, i.e., 382710969 + 45400644 = 19563^2 + 6738^2 .

It is not a de Polignac number, because 428111613 - 2⁶ = 428111549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428111623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23783970 + ... + 23783987.

It is an arithmetic number, because the mean of its divisors is an integer number (103063909).

Almost surely, 2^428111613 is an apocalyptic number.

It is an amenable number.

428111613 is a deficient number, since it is larger than the sum of its proper divisors (190271841).

428111613 is a wasteful number, since it uses less digits than its factorization.

428111613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47567963 (or 47567960 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 428111613 is about 20690.8581987311. The cubic root of 428111613 is about 753.6777071495.

The spelling of 428111613 in words is "four hundred twenty-eight million, one hundred eleven thousand, six hundred thirteen".