428835285 has 48 divisors (see below), whose sum is σ = 803851776. Its totient is φ = 210660864.

The previous prime is 428835283. The next prime is 428835293. The reversal of 428835285 is 582538824.

428835285 is a `hidden beast` number, since 42 + 8 + 83 + 528 + 5 = 666.

It is not a de Polignac number, because 428835285 - 2¹ = 428835283 is a prime.

It is a super-2 number, since 2×428835285² = 367799403322062450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 428835285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428835283) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29992 + ... + 41918.

It is an arithmetic number, because the mean of its divisors is an integer number (16746912).

Almost surely, 2^428835285 is an apocalyptic number.

428835285 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

428835285 is a deficient number, since it is larger than the sum of its proper divisors (375016491).

428835285 is a wasteful number, since it uses less digits than its factorization.

428835285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12002 (or 11999 counting only the distinct ones).

The product of its digits is 614400, while the sum is 45.

The square root of 428835285 is about 20708.3385378934. The cubic root of 428835285 is about 754.1021357373.

The spelling of 428835285 in words is "four hundred twenty-eight million, eight hundred thirty-five thousand, two hundred eighty-five".