428563344 has 80 divisors (see below), whose sum is σ = 1246777344. Its totient is φ = 125673600.

The previous prime is 428563339. The next prime is 428563357. The reversal of 428563344 is 443365824.

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, 3277 + ... + 29459.

Almost surely, 2^428563344 is an apocalyptic number.

428563344 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 428563344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (623388672).

428563344 is an abundant number, since it is smaller than the sum of its proper divisors (818214000).

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

428563344 is a wasteful number, since it uses less digits than its factorization.

428563344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26236 (or 26230 counting only the distinct ones).

The product of its digits is 276480, while the sum is 39.

The square root of 428563344 is about 20701.7715183991. The cubic root of 428563344 is about 753.9427002778.

The spelling of 428563344 in words is "four hundred twenty-eight million, five hundred sixty-three thousand, three hundred forty-four".