281648525748 has 96 divisors (see below), whose sum is σ = 697426329600. Its totient is φ = 88282132224.

The previous prime is 281648525707. The next prime is 281648525749. The reversal of 281648525748 is 847525846182.

It is a happy number.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 281648525691 and 281648525700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281648525749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5052613 + ... + 5108051.

It is an arithmetic number, because the mean of its divisors is an integer number (7264857600).

Almost surely, 2^281648525748 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 281648525748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348713164800).

281648525748 is an abundant number, since it is smaller than the sum of its proper divisors (415777803852).

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

281648525748 is a wasteful number, since it uses less digits than its factorization.

281648525748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55781 (or 55779 counting only the distinct ones).

The product of its digits is 34406400, while the sum is 60.

The spelling of 281648525748 in words is "two hundred eighty-one billion, six hundred forty-eight million, five hundred twenty-five thousand, seven hundred forty-eight".