28343338145 has 16 divisors (see below), whose sum is σ = 36692202960. Its totient is φ = 20938205184.

The previous prime is 28343338129. The next prime is 28343338169. The reversal of 28343338145 is 54183334382.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1004699809 + 27338638336 = 31697^2 + 165344^2 .

It is a cyclic number.

It is not a de Polignac number, because 28343338145 - 2⁴ = 28343338129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28343338096 and 28343338105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3141260 + ... + 3150269.

It is an arithmetic number, because the mean of its divisors is an integer number (2293262685).

Almost surely, 2^28343338145 is an apocalyptic number.

It is an amenable number.

28343338145 is a deficient number, since it is larger than the sum of its proper divisors (8348864815).

28343338145 is a wasteful number, since it uses less digits than its factorization.

28343338145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6291604.

The product of its digits is 829440, while the sum is 44.

The spelling of 28343338145 in words is "twenty-eight billion, three hundred forty-three million, three hundred thirty-eight thousand, one hundred forty-five".