28930429441 has 4 divisors (see below), whose sum is σ = 28939196884. Its totient is φ = 28921662000.

The previous prime is 28930429433. The next prime is 28930429483. The reversal of 28930429441 is 14492403982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19292098816 + 9638330625 = 138896^2 + 98175^2 .

It is a cyclic number.

It is not a de Polignac number, because 28930429441 - 2³ = 28930429433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28930429391 and 28930429400.

It is not an unprimeable number, because it can be changed into a prime (28930429141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4378770 + ... + 4385371.

It is an arithmetic number, because the mean of its divisors is an integer number (7234799221).

Almost surely, 2^28930429441 is an apocalyptic number.

It is an amenable number.

28930429441 is a deficient number, since it is larger than the sum of its proper divisors (8767443).

28930429441 is an equidigital number, since it uses as much as digits as its factorization.

28930429441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8767442.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 28930429441 in words is "twenty-eight billion, nine hundred thirty million, four hundred twenty-nine thousand, four hundred forty-one".