28944280986390 has 384 divisors, whose sum is σ = 98786768071680. Its totient is φ = 5696461209600.

The previous prime is 28944280986373. The next prime is 28944280986437. The reversal of 28944280986390 is 9368908244982.

28944280986390 is a `hidden beast` number, since 2 + 8 + 9 + 442 + 8 + 0 + 98 + 6 + 3 + 90 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 589988742 + ... + 590037798.

It is an arithmetic number, because the mean of its divisors is an integer number (257257208520).

Almost surely, 2^{28944280986390} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28944280986390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49393384035840).

28944280986390 is an abundant number, since it is smaller than the sum of its proper divisors (69842487085290).

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

28944280986390 is a wasteful number, since it uses less digits than its factorization.

28944280986390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53588 (or 53585 counting only the distinct ones).

The product of its (nonzero) digits is 429981696, while the sum is 72.

The spelling of 28944280986390 in words is "twenty-eight trillion, nine hundred forty-four billion, two hundred eighty million, nine hundred eighty-six thousand, three hundred ninety".