28901435723 has 2 divisors, whose sum is σ = 28901435724. Its totient is φ = 28901435722.

The previous prime is 28901435707. The next prime is 28901435789. The reversal of 28901435723 is 32753410982.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28901435723 - 2⁴ = 28901435707 is a prime.

It is not a weakly prime, because it can be changed into another prime (28901435923) 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 as a sum of consecutive naturals, namely, 14450717861 + 14450717862.

It is an arithmetic number, because the mean of its divisors is an integer number (14450717862).

Almost surely, 2^28901435723 is an apocalyptic number.

28901435723 is a deficient number, since it is larger than the sum of its proper divisors (1).

28901435723 is an equidigital number, since it uses as much as digits as its factorization.

28901435723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 28901435723 in words is "twenty-eight billion, nine hundred one million, four hundred thirty-five thousand, seven hundred twenty-three".