28252026044720 has 40 divisors (see below), whose sum is σ = 65688388627920. Its totient is φ = 11300392684800.

The previous prime is 28252026044719. The next prime is 28252026044747. The reversal of 28252026044720 is 2744062025282.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4344806 + ... + 8682245.

It is an arithmetic number, because the mean of its divisors is an integer number (1642209715698).

Almost surely, 2^{28252026044720} is an apocalyptic number.

28252026044720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28252026044720 is an abundant number, since it is smaller than the sum of its proper divisors (37436362583200).

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

28252026044720 is a wasteful number, since it uses less digits than its factorization.

28252026044720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13054173 (or 13054167 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 44.

The spelling of 28252026044720 in words is "twenty-eight trillion, two hundred fifty-two billion, twenty-six million, forty-four thousand, seven hundred twenty".