428106081273 has 32 divisors (see below), whose sum is σ = 631875705216. Its totient is φ = 256108220928.

The previous prime is 428106081257. The next prime is 428106081287. The reversal of 428106081273 is 372180601824.

It is not a de Polignac number, because 428106081273 - 2⁴ = 428106081257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428106081233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1550661 + ... + 1805757.

It is an arithmetic number, because the mean of its divisors is an integer number (19746115788).

Almost surely, 2^428106081273 is an apocalyptic number.

It is an amenable number.

428106081273 is a deficient number, since it is larger than the sum of its proper divisors (203769623943).

428106081273 is a wasteful number, since it uses less digits than its factorization.

428106081273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256313.

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 428106081273 in words is "four hundred twenty-eight billion, one hundred six million, eighty-one thousand, two hundred seventy-three".