428146013 has 4 divisors (see below), whose sum is σ = 434536320. Its totient is φ = 421755708.

The previous prime is 428146001. The next prime is 428146021. The reversal of 428146013 is 310641824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 428146013 - 2⁴ = 428145997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428146073) 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 3 ways as a sum of consecutive naturals, for example, 3195053 + ... + 3195186.

It is an arithmetic number, because the mean of its divisors is an integer number (108634080).

Almost surely, 2^428146013 is an apocalyptic number.

It is an amenable number.

428146013 is a deficient number, since it is larger than the sum of its proper divisors (6390307).

428146013 is an equidigital number, since it uses as much as digits as its factorization.

428146013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6390306.

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

The square root of 428146013 is about 20691.6894670300. The cubic root of 428146013 is about 753.6978933330.

Adding to 428146013 its reverse (310641824), we get a palindrome (738787837).

The spelling of 428146013 in words is "four hundred twenty-eight million, one hundred forty-six thousand, thirteen".