28881056841 has 16 divisors (see below), whose sum is σ = 47394555264. Its totient is φ = 15233963904.

The previous prime is 28881056839. The next prime is 28881056851. The reversal of 28881056841 is 14865018882.

It is not a de Polignac number, because 28881056841 - 2¹ = 28881056839 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28881056851) 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 15 ways as a sum of consecutive naturals, for example, 52895436 + ... + 52895981.

It is an arithmetic number, because the mean of its divisors is an integer number (2962159704).

Almost surely, 2^28881056841 is an apocalyptic number.

28881056841 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28881056841 is a deficient number, since it is larger than the sum of its proper divisors (18513498423).

28881056841 is a wasteful number, since it uses less digits than its factorization.

28881056841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105791440.

The product of its (nonzero) digits is 983040, while the sum is 51.

The spelling of 28881056841 in words is "twenty-eight billion, eight hundred eighty-one million, fifty-six thousand, eight hundred forty-one".