28343862870 has 32 divisors (see below), whose sum is σ = 68521815648. Its totient is φ = 7503191808.

The previous prime is 28343862863. The next prime is 28343862871. The reversal of 28343862870 is 7826834382.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28343862871) 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 15 ways as a sum of consecutive naturals, for example, 3444049 + ... + 3452268.

It is an arithmetic number, because the mean of its divisors is an integer number (2141306739).

Almost surely, 2^28343862870 is an apocalyptic number.

28343862870 is an abundant number, since it is smaller than the sum of its proper divisors (40177952778).

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

28343862870 is a wasteful number, since it uses less digits than its factorization.

28343862870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6896464.

The product of its (nonzero) digits is 3096576, while the sum is 51.

The spelling of 28343862870 in words is "twenty-eight billion, three hundred forty-three million, eight hundred sixty-two thousand, eight hundred seventy".