428563008 has 112 divisors (see below), whose sum is σ = 1294140160. Its totient is φ = 138972672.

The previous prime is 428563001. The next prime is 428563019. The reversal of 428563008 is 800365824.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (428563001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60585 + ... + 67287.

Almost surely, 2^428563008 is an apocalyptic number.

428563008 is a gapful number since it is divisible by the number (48) 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 428563008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (647070080).

428563008 is an abundant number, since it is smaller than the sum of its proper divisors (865577152).

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

428563008 is a wasteful number, since it uses less digits than its factorization.

428563008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6761 (or 6745 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 428563008 is about 20701.7634031500. The cubic root of 428563008 is about 753.9425032437.

The spelling of 428563008 in words is "four hundred twenty-eight million, five hundred sixty-three thousand, eight".