28891886048886 has 64 divisors (see below), whose sum is σ = 69954040696320. Its totient is φ = 7765822149120.

The previous prime is 28891886048843. The next prime is 28891886048887. The reversal of 28891886048886 is 68884068819882.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28891886048799 and 28891886048808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28891886048887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7296820 + ... + 10536951.

It is an arithmetic number, because the mean of its divisors is an integer number (1093031885880).

Almost surely, 2^{28891886048886} is an apocalyptic number.

28891886048886 is an abundant number, since it is smaller than the sum of its proper divisors (41062154647434).

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

28891886048886 is a wasteful number, since it uses less digits than its factorization.

28891886048886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17836069.

The product of its (nonzero) digits is 5435817984, while the sum is 84.

The spelling of 28891886048886 in words is "twenty-eight trillion, eight hundred ninety-one billion, eight hundred eighty-six million, forty-eight thousand, eight hundred eighty-six".