28405022829 has 32 divisors (see below), whose sum is σ = 39765196800. Its totient is φ = 18013769280.

The previous prime is 28405022797. The next prime is 28405022843. The reversal of 28405022829 is 92822050482.

It is not a de Polignac number, because 28405022829 - 2⁵ = 28405022797 is a prime.

It is a super-3 number, since 3×28405022829³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28405022869) 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, 1674022 + ... + 1690904.

It is an arithmetic number, because the mean of its divisors is an integer number (1242662400).

Almost surely, 2^28405022829 is an apocalyptic number.

It is an amenable number.

28405022829 is a deficient number, since it is larger than the sum of its proper divisors (11360173971).

28405022829 is a wasteful number, since it uses less digits than its factorization.

28405022829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17225.

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 28405022829 in words is "twenty-eight billion, four hundred five million, twenty-two thousand, eight hundred twenty-nine".