28883145946 has 4 divisors (see below), whose sum is σ = 43324718922. Its totient is φ = 14441572972.

The previous prime is 28883145943. The next prime is 28883145947. The reversal of 28883145946 is 64954138882.

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

It can be written as a sum of positive squares in only one way, i.e., 24178695025 + 4704450921 = 155495^2 + 68589^2 .

It is a super-2 number, since 2×28883145946² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28883145943) 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 as a sum of consecutive naturals, namely, 7220786485 + ... + 7220786488.

Almost surely, 2^28883145946 is an apocalyptic number.

28883145946 is a deficient number, since it is larger than the sum of its proper divisors (14441572976).

28883145946 is a wasteful number, since it uses less digits than its factorization.

28883145946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14441572975.

The product of its digits is 13271040, while the sum is 58.

The spelling of 28883145946 in words is "twenty-eight billion, eight hundred eighty-three million, one hundred forty-five thousand, nine hundred forty-six".