428840272689 has 8 divisors (see below), whose sum is σ = 571895323872. Its totient is φ = 285839368320.

The previous prime is 428840272649. The next prime is 428840272699. The reversal of 428840272689 is 986272048824.

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

It is not a de Polignac number, because 428840272689 - 2⁸ = 428840272433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428840272649) 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, 13518219 + ... + 13549904.

It is an arithmetic number, because the mean of its divisors is an integer number (71486915484).

Almost surely, 2^428840272689 is an apocalyptic number.

It is an amenable number.

428840272689 is a deficient number, since it is larger than the sum of its proper divisors (143055051183).

428840272689 is a wasteful number, since it uses less digits than its factorization.

428840272689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27073407.

The product of its (nonzero) digits is 24772608, while the sum is 60.

The spelling of 428840272689 in words is "four hundred twenty-eight billion, eight hundred forty million, two hundred seventy-two thousand, six hundred eighty-nine".