428661909024 has 48 divisors (see below), whose sum is σ = 1126320773760. Its totient is φ = 142749745920.

The previous prime is 428661909001. The next prime is 428661909029. The reversal of 428661909024 is 420909166824.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (428661909029) 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, 2049067 + ... + 2248554.

It is an arithmetic number, because the mean of its divisors is an integer number (23465016120).

Almost surely, 2^428661909024 is an apocalyptic number.

It is an amenable number.

428661909024 is an abundant number, since it is smaller than the sum of its proper divisors (697658864736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428661909024 is a wasteful number, since it uses less digits than its factorization.

428661909024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4298673 (or 4298665 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 428661909024 in words is "four hundred twenty-eight billion, six hundred sixty-one million, nine hundred nine thousand, twenty-four".