428554984 has 64 divisors (see below), whose sum is σ = 953447040. Its totient is φ = 178018560.

The previous prime is 428554957. The next prime is 428555003. The reversal of 428554984 is 489455824.

It is a super-2 number, since 2×428554984² = 367318748622480512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116014 + ... + 119650.

It is an arithmetic number, because the mean of its divisors is an integer number (14897610).

Almost surely, 2^428554984 is an apocalyptic number.

428554984 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428554984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (476723520).

428554984 is an abundant number, since it is smaller than the sum of its proper divisors (524892056).

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

428554984 is a wasteful number, since it uses less digits than its factorization.

428554984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770 (or 3766 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 49.

The square root of 428554984 is about 20701.5696023273. The cubic root of 428554984 is about 753.9377978505.

The spelling of 428554984 in words is "four hundred twenty-eight million, five hundred fifty-four thousand, nine hundred eighty-four".