28243434061 has 16 divisors (see below), whose sum is σ = 29125890288. Its totient is φ = 27378432000.

The previous prime is 28243434053. The next prime is 28243434073. The reversal of 28243434061 is 16043434282.

It can be written as a sum of positive squares in 8 ways, for example, as 1472256900 + 26771177161 = 38370^2 + 163619^2 .

It is a cyclic number.

It is not a de Polignac number, because 28243434061 - 2³ = 28243434053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28243434061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28243434001) 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, 996121 + ... + 1024081.

It is an arithmetic number, because the mean of its divisors is an integer number (1820368143).

Almost surely, 2^28243434061 is an apocalyptic number.

It is an amenable number.

28243434061 is a deficient number, since it is larger than the sum of its proper divisors (882456227).

28243434061 is a wasteful number, since it uses less digits than its factorization.

28243434061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28272.

The product of its (nonzero) digits is 110592, while the sum is 37.

The spelling of 28243434061 in words is "twenty-eight billion, two hundred forty-three million, four hundred thirty-four thousand, sixty-one".