428849580 has 96 divisors (see below), whose sum is σ = 1231324416. Its totient is φ = 111488256.

The previous prime is 428849579. The next prime is 428849587. The reversal of 428849580 is 85948824.

It is not an unprimeable number, because it can be changed into a prime (428849587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 429642 + ... + 430638.

It is an arithmetic number, because the mean of its divisors is an integer number (12826296).

Almost surely, 2^428849580 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 428849580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615662208).

428849580 is an abundant number, since it is smaller than the sum of its proper divisors (802474836).

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

428849580 is a wasteful number, since it uses less digits than its factorization.

428849580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183 (or 1181 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The square root of 428849580 is about 20708.6836858358. The cubic root of 428849580 is about 754.1105148443.

The spelling of 428849580 in words is "four hundred twenty-eight million, eight hundred forty-nine thousand, five hundred eighty".