28378922382720 has 3072 divisors, whose sum is σ = 131505776640000. Its totient is φ = 5741330595840.

The previous prime is 28378922382703. The next prime is 28378922382791. The reversal of 28378922382720 is 2728322987382.

It is a happy number.

28378922382720 is a `hidden beast` number, since 2 + 8 + 378 + 9 + 2 + 238 + 2 + 7 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 260357086026 + ... + 260357086134.

It is an arithmetic number, because the mean of its divisors is an integer number (42807870000).

Almost surely, 2^{28378922382720} is an apocalyptic number.

28378922382720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28378922382720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65752888320000).

28378922382720 is an abundant number, since it is smaller than the sum of its proper divisors (103126854257280).

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

28378922382720 is a wasteful number, since it uses less digits than its factorization.

28378922382720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 63.

The spelling of 28378922382720 in words is "twenty-eight trillion, three hundred seventy-eight billion, nine hundred twenty-two million, three hundred eighty-two thousand, seven hundred twenty".