428840105 has 8 divisors (see below), whose sum is σ = 515443200. Its totient is φ = 342515376.

The previous prime is 428840099. The next prime is 428840141. The reversal of 428840105 is 501048824.

It is a happy number.

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 428840105 - 2¹⁴ = 428823721 is a prime.

It is a super-2 number, since 2×428840105² = 367807671312822050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66185 + ... + 72374.

It is an arithmetic number, because the mean of its divisors is an integer number (64430400).

Almost surely, 2^428840105 is an apocalyptic number.

It is an amenable number.

428840105 is a deficient number, since it is larger than the sum of its proper divisors (86603095).

428840105 is a wasteful number, since it uses less digits than its factorization.

428840105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139183.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 428840105 is about 20708.4549158067. The cubic root of 428840105 is about 754.1049610323.

Adding to 428840105 its reverse (501048824), we get a palindrome (929888929).

The spelling of 428840105 in words is "four hundred twenty-eight million, eight hundred forty thousand, one hundred five".