428620341118387 has 24 divisors (see below), whose sum is σ = 488646459947520. Its totient is φ = 375236186371200.

The previous prime is 428620341118379. The next prime is 428620341118429. The reversal of 428620341118387 is 783811143026824.

It is a happy number.

It is not a de Polignac number, because 428620341118387 - 2³ = 428620341118379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428620341118087) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158119314 + ... + 160807207.

It is an arithmetic number, because the mean of its divisors is an integer number (20360269164480).

Almost surely, 2^{428620341118387} is an apocalyptic number.

428620341118387 is a deficient number, since it is larger than the sum of its proper divisors (60026118829133).

428620341118387 is a wasteful number, since it uses less digits than its factorization.

428620341118387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318926955 (or 318926944 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 58.

The spelling of 428620341118387 in words is "four hundred twenty-eight trillion, six hundred twenty billion, three hundred forty-one million, one hundred eighteen thousand, three hundred eighty-seven".