428636275289 has 8 divisors (see below), whose sum is σ = 440438081160. Its totient is φ = 416845892736.

The previous prime is 428636275283. The next prime is 428636275321. The reversal of 428636275289 is 982572636824.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 147091425625 + 281544849664 = 383525^2 + 530608^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 428636275289 - 2⁴ = 428636275273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (428636275283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2779724 + ... + 2929869.

It is an arithmetic number, because the mean of its divisors is an integer number (55054760145).

Almost surely, 2^428636275289 is an apocalyptic number.

It is an amenable number.

428636275289 is a deficient number, since it is larger than the sum of its proper divisors (11801805871).

428636275289 is a wasteful number, since it uses less digits than its factorization.

428636275289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5711659.

The product of its digits is 69672960, while the sum is 62.

The spelling of 428636275289 in words is "four hundred twenty-eight billion, six hundred thirty-six million, two hundred seventy-five thousand, two hundred eighty-nine".