28440456207324 has 192 divisors, whose sum is σ = 78421846228992. Its totient is φ = 7850260051200.

The previous prime is 28440456207323. The next prime is 28440456207343. The reversal of 28440456207324 is 42370265404482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28440456207323) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4321597714 + ... + 4321604294.

It is an arithmetic number, because the mean of its divisors is an integer number (408447115776).

Almost surely, 2^{28440456207324} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28440456207324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39210923114496).

28440456207324 is an abundant number, since it is smaller than the sum of its proper divisors (49981390021668).

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

28440456207324 is a wasteful number, since it uses less digits than its factorization.

28440456207324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9216 (or 9214 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 51.

The spelling of 28440456207324 in words is "twenty-eight trillion, four hundred forty billion, four hundred fifty-six million, two hundred seven thousand, three hundred twenty-four".