428082867 has 8 divisors (see below), whose sum is σ = 634196880. Its totient is φ = 285388560.

The previous prime is 428082857. The next prime is 428082869. The reversal of 428082867 is 768280824.

It is a happy number.

It is not a de Polignac number, because 428082867 - 2⁶ = 428082803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428082869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7927434 + ... + 7927487.

It is an arithmetic number, because the mean of its divisors is an integer number (79274610).

Almost surely, 2^428082867 is an apocalyptic number.

428082867 is a deficient number, since it is larger than the sum of its proper divisors (206114013).

428082867 is a wasteful number, since it uses less digits than its factorization.

428082867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15854930 (or 15854924 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 428082867 is about 20690.1635324615. The cubic root of 428082867 is about 753.6608379472.

The spelling of 428082867 in words is "four hundred twenty-eight million, eighty-two thousand, eight hundred sixty-seven".