28204313493888 has 384 divisors, whose sum is σ = 96260525524800. Its totient is φ = 7755622318080.

The previous prime is 28204313493887. The next prime is 28204313493901. The reversal of 28204313493888 is 88839431340282.

28204313493888 is a `hidden beast` number, since 2 + 8 + 2 + 0 + 431 + 34 + 93 + 8 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28204313493887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73004268 + ... + 73389588.

Almost surely, 2^{28204313493888} is an apocalyptic number.

28204313493888 is a gapful number since it is divisible by the number (28) 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 28204313493888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48130262762400).

28204313493888 is an abundant number, since it is smaller than the sum of its proper divisors (68056212030912).

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

28204313493888 is a wasteful number, since it uses less digits than its factorization.

28204313493888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385690 (or 385675 counting only the distinct ones).

The product of its (nonzero) digits is 63700992, while the sum is 63.

The spelling of 28204313493888 in words is "twenty-eight trillion, two hundred four billion, three hundred thirteen million, four hundred ninety-three thousand, eight hundred eighty-eight".