428855428 has 6 divisors (see below), whose sum is σ = 750497006. Its totient is φ = 214427712.

The previous prime is 428855417. The next prime is 428855429. The reversal of 428855428 is 824558824.

It can be written as a sum of positive squares in only one way, i.e., 360164484 + 68690944 = 18978^2 + 8288^2 .

It is not an unprimeable number, because it can be changed into a prime (428855429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53606925 + ... + 53606932.

Almost surely, 2^428855428 is an apocalyptic number.

It is an amenable number.

428855428 is a deficient number, since it is larger than the sum of its proper divisors (321641578).

428855428 is a wasteful number, since it uses less digits than its factorization.

428855428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107213861 (or 107213859 counting only the distinct ones).

The product of its digits is 819200, while the sum is 46.

The square root of 428855428 is about 20708.8248821607. The cubic root of 428855428 is about 754.1139426338.

The spelling of 428855428 in words is "four hundred twenty-eight million, eight hundred fifty-five thousand, four hundred twenty-eight".