428034280 has 64 divisors (see below), whose sum is σ = 1023264000. Its totient is φ = 160683264.

The previous prime is 428034253. The next prime is 428034293. The reversal of 428034280 is 82430824.

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, 80257 + ... + 85423.

It is an arithmetic number, because the mean of its divisors is an integer number (15988500).

Almost surely, 2^428034280 is an apocalyptic number.

428034280 is a gapful number since it is divisible by the number (40) 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 428034280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (511632000).

428034280 is an abundant number, since it is smaller than the sum of its proper divisors (595229720).

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

428034280 is a wasteful number, since it uses less digits than its factorization.

428034280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5306 (or 5302 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 428034280 is about 20688.9893421598. The cubic root of 428034280 is about 753.6323236046.

The spelling of 428034280 in words is "four hundred twenty-eight million, thirty-four thousand, two hundred eighty".