28341993907 has 4 divisors (see below), whose sum is σ = 28343034720. Its totient is φ = 28340953096.

The previous prime is 28341993881. The next prime is 28341993919. The reversal of 28341993907 is 70939914382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28341993907 - 2³¹ = 26194510259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28341993997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478432 + ... + 534397.

It is an arithmetic number, because the mean of its divisors is an integer number (7085758680).

Almost surely, 2^28341993907 is an apocalyptic number.

28341993907 is a deficient number, since it is larger than the sum of its proper divisors (1040813).

28341993907 is a wasteful number, since it uses less digits than its factorization.

28341993907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040812.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 28341993907 in words is "twenty-eight billion, three hundred forty-one million, nine hundred ninety-three thousand, nine hundred seven".