428106013971 has 8 divisors (see below), whose sum is σ = 571929450960. Its totient is φ = 284843293152.

The previous prime is 428106013969. The next prime is 428106013991. The reversal of 428106013971 is 179310601824.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428106013971 - 2¹ = 428106013969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428106013991) 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, 140177260 + ... + 140180313.

It is an arithmetic number, because the mean of its divisors is an integer number (71491181370).

Almost surely, 2^428106013971 is an apocalyptic number.

428106013971 is a deficient number, since it is larger than the sum of its proper divisors (143823436989).

428106013971 is a wasteful number, since it uses less digits than its factorization.

428106013971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280358085.

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 428106013971 in words is "four hundred twenty-eight billion, one hundred six million, thirteen thousand, nine hundred seventy-one".