28195267268 has 12 divisors (see below), whose sum is σ = 56390534592. Its totient is φ = 12083685960.

The previous prime is 28195267267. The next prime is 28195267271. The reversal of 28195267268 is 86276259182.

It is a happy number.

28195267268 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28195267267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503486888 + ... + 503486943.

It is an arithmetic number, because the mean of its divisors is an integer number (4699211216).

Almost surely, 2^28195267268 is an apocalyptic number.

28195267268 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28195267268 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28195267268 is a wasteful number, since it uses less digits than its factorization.

28195267268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006973842 (or 1006973840 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 56.

The spelling of 28195267268 in words is "twenty-eight billion, one hundred ninety-five million, two hundred sixty-seven thousand, two hundred sixty-eight".