28829297381 has 12 divisors (see below), whose sum is σ = 29361632064. Its totient is φ = 28306441800.

The previous prime is 28829297369. The next prime is 28829297461. The reversal of 28829297381 is 18379292882.

It is not a de Polignac number, because 28829297381 - 2¹⁰ = 28829296357 is a prime.

It is a super-3 number, since 3×28829297381³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28829297381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28829297281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3166646 + ... + 3175736.

It is an arithmetic number, because the mean of its divisors is an integer number (2446802672).

Almost surely, 2^28829297381 is an apocalyptic number.

It is an amenable number.

28829297381 is a deficient number, since it is larger than the sum of its proper divisors (532334683).

28829297381 is an frugal number, since it uses more digits than its factorization.

28829297381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10120 (or 10061 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 59.

The spelling of 28829297381 in words is "twenty-eight billion, eight hundred twenty-nine million, two hundred ninety-seven thousand, three hundred eighty-one".