28381941345 has 32 divisors (see below), whose sum is σ = 46976716800. Its totient is φ = 14617264320.

The previous prime is 28381941323. The next prime is 28381941361. The reversal of 28381941345 is 54314918382.

It is not a de Polignac number, because 28381941345 - 2²³ = 28373552737 is a prime.

It is a super-2 number, since 2×28381941345² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28381941294 and 28381941303.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 151806 + ... + 282504.

It is an arithmetic number, because the mean of its divisors is an integer number (1468022400).

Almost surely, 2^28381941345 is an apocalyptic number.

It is an amenable number.

28381941345 is a deficient number, since it is larger than the sum of its proper divisors (18594775455).

28381941345 is a wasteful number, since it uses less digits than its factorization.

28381941345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131205.

The product of its digits is 829440, while the sum is 48.

The spelling of 28381941345 in words is "twenty-eight billion, three hundred eighty-one million, nine hundred forty-one thousand, three hundred forty-five".