428883505 has 8 divisors (see below), whose sum is σ = 526629312. Its totient is φ = 335127408.

The previous prime is 428883503. The next prime is 428883509. The reversal of 428883505 is 505388824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428883505 - 2¹ = 428883503 is a prime.

It is a super-2 number, since 2×428883505² = 367882121722170050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428883503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 997189 + ... + 997618.

It is an arithmetic number, because the mean of its divisors is an integer number (65828664).

Almost surely, 2^428883505 is an apocalyptic number.

It is an amenable number.

428883505 is a deficient number, since it is larger than the sum of its proper divisors (97745807).

428883505 is a wasteful number, since it uses less digits than its factorization.

428883505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994855.

The product of its (nonzero) digits is 307200, while the sum is 43.

The square root of 428883505 is about 20709.5027704675. The cubic root of 428883505 is about 754.1303994579.

The spelling of 428883505 in words is "four hundred twenty-eight million, eight hundred eighty-three thousand, five hundred five".