28343500042 has 72 divisors (see below), whose sum is σ = 51059035692. Its totient is φ = 11785213440.

The previous prime is 28343500037. The next prime is 28343500049. The reversal of 28343500042 is 24000534382.

It can be written as a sum of positive squares in 6 ways, for example, as 3741891241 + 24601608801 = 61171^2 + 156849^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28343499977 and 28343500013.

It is not an unprimeable number, because it can be changed into a prime (28343500049) 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 35 ways as a sum of consecutive naturals, for example, 4618408 + ... + 4624540.

Almost surely, 2^28343500042 is an apocalyptic number.

28343500042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28343500042 is a deficient number, since it is larger than the sum of its proper divisors (22715535650).

28343500042 is a wasteful number, since it uses less digits than its factorization.

28343500042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296 (or 6272 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The spelling of 28343500042 in words is "twenty-eight billion, three hundred forty-three million, five hundred thousand, forty-two".