28280844429 has 8 divisors (see below), whose sum is σ = 37708625760. Its totient is φ = 18853479696.

The previous prime is 28280844421. The next prime is 28280844509. The reversal of 28280844429 is 92444808282.

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

It is not a de Polignac number, because 28280844429 - 2³ = 28280844421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28280844421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128487 + ... + 270315.

It is an arithmetic number, because the mean of its divisors is an integer number (4713578220).

Almost surely, 2^28280844429 is an apocalyptic number.

It is an amenable number.

28280844429 is a deficient number, since it is larger than the sum of its proper divisors (9427781331).

28280844429 is a wasteful number, since it uses less digits than its factorization.

28280844429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208299.

The product of its (nonzero) digits is 2359296, while the sum is 51.

The spelling of 28280844429 in words is "twenty-eight billion, two hundred eighty million, eight hundred forty-four thousand, four hundred twenty-nine".