28330429505 has 16 divisors (see below), whose sum is σ = 38943327744. Its totient is φ = 19381496640.

The previous prime is 28330429493. The next prime is 28330429511. The reversal of 28330429505 is 50592403382.

It is not a de Polignac number, because 28330429505 - 2¹⁶ = 28330363969 is a prime.

It is a super-2 number, since 2×28330429505² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 923942 + ... + 954111.

It is an arithmetic number, because the mean of its divisors is an integer number (2433957984).

Almost surely, 2^28330429505 is an apocalyptic number.

It is an amenable number.

28330429505 is a deficient number, since it is larger than the sum of its proper divisors (10612898239).

28330429505 is a wasteful number, since it uses less digits than its factorization.

28330429505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878496.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 28330429505 in words is "twenty-eight billion, three hundred thirty million, four hundred twenty-nine thousand, five hundred five".