28102302836 has 6 divisors (see below), whose sum is σ = 49179029970. Its totient is φ = 14051151416.

The previous prime is 28102302817. The next prime is 28102302841. The reversal of 28102302836 is 63820320182.

It can be written as a sum of positive squares in only one way, i.e., 20595120100 + 7507182736 = 143510^2 + 86644^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28102302796 and 28102302805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3512787851 + ... + 3512787858.

It is an arithmetic number, because the mean of its divisors is an integer number (8196504995).

Almost surely, 2^28102302836 is an apocalyptic number.

It is an amenable number.

28102302836 is a deficient number, since it is larger than the sum of its proper divisors (21076727134).

28102302836 is a wasteful number, since it uses less digits than its factorization.

28102302836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7025575713 (or 7025575711 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 28102302836 in words is "twenty-eight billion, one hundred two million, three hundred two thousand, eight hundred thirty-six".