28349289492 has 48 divisors (see below), whose sum is σ = 72657231360. Its totient is φ = 8563170528.

The previous prime is 28349289491. The next prime is 28349289509. The reversal of 28349289492 is 29498294382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28349289491) 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 15 ways as a sum of consecutive naturals, for example, 2697778 + ... + 2708265.

It is an arithmetic number, because the mean of its divisors is an integer number (1513692320).

Almost surely, 2^28349289492 is an apocalyptic number.

It is an amenable number.

28349289492 is an abundant number, since it is smaller than the sum of its proper divisors (44307941868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28349289492 is a wasteful number, since it uses less digits than its factorization.

28349289492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406092 (or 5406090 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 60.

The spelling of 28349289492 in words is "twenty-eight billion, three hundred forty-nine million, two hundred eighty-nine thousand, four hundred ninety-two".