28893065436 has 36 divisors (see below), whose sum is σ = 73111972752. Its totient is φ = 9620904384.

The previous prime is 28893065423. The next prime is 28893065437. The reversal of 28893065436 is 63456039882.

28893065436 is a `hidden beast` number, since 2 + 8 + 8 + 93 + 0 + 6 + 543 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28893065437) 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 11 ways as a sum of consecutive naturals, for example, 386776 + ... + 455391.

It is an arithmetic number, because the mean of its divisors is an integer number (2030888132).

Almost surely, 2^28893065436 is an apocalyptic number.

It is an amenable number.

28893065436 is an abundant number, since it is smaller than the sum of its proper divisors (44218907316).

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

28893065436 is a wasteful number, since it uses less digits than its factorization.

28893065436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843130 (or 843125 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 28893065436 in words is "twenty-eight billion, eight hundred ninety-three million, sixty-five thousand, four hundred thirty-six".