28343367648 has 72 divisors (see below), whose sum is σ = 84843649800. Its totient is φ = 8950535424.

The previous prime is 28343367643. The next prime is 28343367653. The reversal of 28343367648 is 84676334382.

It is an interprime number because it is at equal distance from previous prime (28343367643) and next prime (28343367653).

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 28343367594 and 28343367603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28343367643) 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 11 ways as a sum of consecutive naturals, for example, 2584383 + ... + 2595326.

It is an arithmetic number, because the mean of its divisors is an integer number (1178384025).

Almost surely, 2^28343367648 is an apocalyptic number.

It is an amenable number.

28343367648 is an abundant number, since it is smaller than the sum of its proper divisors (56500282152).

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

28343367648 is a wasteful number, since it uses less digits than its factorization.

28343367648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5179744 (or 5179733 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 54.

The spelling of 28343367648 in words is "twenty-eight billion, three hundred forty-three million, three hundred sixty-seven thousand, six hundred forty-eight".