428628955 has 8 divisors (see below), whose sum is σ = 525298752. Its totient is φ = 335607168.

The previous prime is 428628953. The next prime is 428629009. The reversal of 428628955 is 559826824.

It is a happy number.

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 428628955 - 2¹ = 428628953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 428628899 and 428628908.

It is not an unprimeable number, because it can be changed into a prime (428628953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 911742 + ... + 912211.

It is an arithmetic number, because the mean of its divisors is an integer number (65662344).

Almost surely, 2^428628955 is an apocalyptic number.

428628955 is a deficient number, since it is larger than the sum of its proper divisors (96669797).

428628955 is a wasteful number, since it uses less digits than its factorization.

428628955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824005.

The product of its digits is 1382400, while the sum is 49.

The square root of 428628955 is about 20703.3561288985. The cubic root of 428628955 is about 753.9811733227.

The spelling of 428628955 in words is "four hundred twenty-eight million, six hundred twenty-eight thousand, nine hundred fifty-five".