28043845374736 has 45 divisors (see below), whose sum is σ = 54851932709301. Its totient is φ = 13889754004416.

The previous prime is 28043845374719. The next prime is 28043845374799. The reversal of 28043845374736 is 63747354834082.

The square root of 28043845374736 is 5295644.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14331221635600 + 13712623739136 = 3785660^2 + 3703056^2 .

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 2266529446 + ... + 2266541818.

Almost surely, 2^{28043845374736} is an apocalyptic number.

28043845374736 is the 5295644-th square number.

It is an amenable number.

28043845374736 is a deficient number, since it is larger than the sum of its proper divisors (26808087334565).

28043845374736 is an frugal number, since it uses more digits than its factorization.

28043845374736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24968 (or 12482 counting only the distinct ones).

The product of its (nonzero) digits is 325140480, while the sum is 64.

The spelling of 28043845374736 in words is "twenty-eight trillion, forty-three billion, eight hundred forty-five million, three hundred seventy-four thousand, seven hundred thirty-six".