428835090 has 64 divisors (see below), whose sum is σ = 1065784320. Its totient is φ = 110315520.

The previous prime is 428835079. The next prime is 428835091. The reversal of 428835090 is 90538824.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (428835091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 424506 + ... + 425514.

It is an arithmetic number, because the mean of its divisors is an integer number (16652880).

Almost surely, 2^428835090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428835090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (532892160).

428835090 is an abundant number, since it is smaller than the sum of its proper divisors (636949230).

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

428835090 is a wasteful number, since it uses less digits than its factorization.

428835090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 428835090 is about 20708.3338296445. Note that the first 3 decimals coincide. The cubic root of 428835090 is about 754.1020214355.

The spelling of 428835090 in words is "four hundred twenty-eight million, eight hundred thirty-five thousand, ninety".