428433207 has 8 divisors (see below), whose sum is σ = 571344384. Its totient is φ = 285572088.

The previous prime is 428433199. The next prime is 428433227. The reversal of 428433207 is 702334824.

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

It is not a de Polignac number, because 428433207 - 2³ = 428433199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428433227) 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, 18298 + ... + 34520.

It is an arithmetic number, because the mean of its divisors is an integer number (71418048).

Almost surely, 2^428433207 is an apocalyptic number.

428433207 is a deficient number, since it is larger than the sum of its proper divisors (142911177).

428433207 is a wasteful number, since it uses less digits than its factorization.

428433207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25029.

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 428433207 is about 20698.6281429471. The cubic root of 428433207 is about 753.8663787916.

The spelling of 428433207 in words is "four hundred twenty-eight million, four hundred thirty-three thousand, two hundred seven".