428924808 has 160 divisors (see below), whose sum is σ = 1317254400. Its totient is φ = 129589632.

The previous prime is 428924803. The next prime is 428924833. The reversal of 428924808 is 808429824.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (428924803) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 496585 + ... + 497447.

It is an arithmetic number, because the mean of its divisors is an integer number (8232840).

Almost surely, 2^428924808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428924808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658627200).

428924808 is an abundant number, since it is smaller than the sum of its proper divisors (888329592).

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

428924808 is a wasteful number, since it uses less digits than its factorization.

428924808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953 (or 940 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 428924808 is about 20710.4999456797. The cubic root of 428924808 is about 754.1546071567.

The spelling of 428924808 in words is "four hundred twenty-eight million, nine hundred twenty-four thousand, eight hundred eight".