28002828136 has 8 divisors (see below), whose sum is σ = 52505302770. Its totient is φ = 14001414064.

The previous prime is 28002828047. The next prime is 28002828137. The reversal of 28002828136 is 63182820082.

It can be written as a sum of positive squares in only one way, i.e., 27720252036 + 282576100 = 166494^2 + 16810^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×28002828136² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28002828137) by changing a digit.

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 as a sum of consecutive naturals, namely, 1750176751 + ... + 1750176766.

Almost surely, 2^28002828136 is an apocalyptic number.

It is an amenable number.

28002828136 is a deficient number, since it is larger than the sum of its proper divisors (24502474634).

28002828136 is a wasteful number, since it uses less digits than its factorization.

28002828136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500353523 (or 3500353519 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 28002828136 in words is "twenty-eight billion, two million, eight hundred twenty-eight thousand, one hundred thirty-six".