428549884 has 36 divisors (see below), whose sum is σ = 873905760. Its totient is φ = 183348480.

The previous prime is 428549881. The next prime is 428549951. The reversal of 428549884 is 488945824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428549881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139404 + ... + 142444.

It is an arithmetic number, because the mean of its divisors is an integer number (24275160).

Almost surely, 2^428549884 is an apocalyptic number.

It is an amenable number.

428549884 is an abundant number, since it is smaller than the sum of its proper divisors (445355876).

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

428549884 is a wasteful number, since it uses less digits than its factorization.

428549884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778 (or 3769 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 52.

The square root of 428549884 is about 20701.4464228952. The cubic root of 428549884 is about 753.9348071039.

The spelling of 428549884 in words is "four hundred twenty-eight million, five hundred forty-nine thousand, eight hundred eighty-four".