28393820001 has 24 divisors (see below), whose sum is σ = 44395400160. Its totient is φ = 17932932792.

The previous prime is 28393819969. The next prime is 28393820027. The reversal of 28393820001 is 10002839382.

It is a happy number.

It is not a de Polignac number, because 28393820001 - 2⁵ = 28393819969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28393820201) 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 23 ways as a sum of consecutive naturals, for example, 1446795 + ... + 1466288.

It is an arithmetic number, because the mean of its divisors is an integer number (1849808340).

Almost surely, 2^28393820001 is an apocalyptic number.

It is an amenable number.

28393820001 is a deficient number, since it is larger than the sum of its proper divisors (16001580159).

28393820001 is a wasteful number, since it uses less digits than its factorization.

28393820001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913130 (or 2913105 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 28393820001 in words is "twenty-eight billion, three hundred ninety-three million, eight hundred twenty thousand, one".