28323132005 has 32 divisors (see below), whose sum is σ = 38975385600. Its totient is φ = 19355602752.

The previous prime is 28323131999. The next prime is 28323132023. The reversal of 28323132005 is 50023132382.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28323132005 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18596174 + ... + 18597696.

It is an arithmetic number, because the mean of its divisors is an integer number (1217980800).

Almost surely, 2^28323132005 is an apocalyptic number.

It is an amenable number.

28323132005 is a deficient number, since it is larger than the sum of its proper divisors (10652253595).

28323132005 is a wasteful number, since it uses less digits than its factorization.

28323132005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2993.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 28323132005 its reverse (50023132382), we get a palindrome (78346264387).

The spelling of 28323132005 in words is "twenty-eight billion, three hundred twenty-three million, one hundred thirty-two thousand, five".