28061402836 has 12 divisors (see below), whose sum is σ = 49840402528. Its totient is φ = 13821287832.

The previous prime is 28061402783. The next prime is 28061402851. The reversal of 28061402836 is 63820416082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52353096 + ... + 52353631.

Almost surely, 2^28061402836 is an apocalyptic number.

It is an amenable number.

28061402836 is a deficient number, since it is larger than the sum of its proper divisors (21778999692).

28061402836 is a wasteful number, since it uses less digits than its factorization.

28061402836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104706798 (or 104706796 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

It can be divided in two parts, 2806140 and 2836, that added together give a square (2808976 = 1676²).

The spelling of 28061402836 in words is "twenty-eight billion, sixty-one million, four hundred two thousand, eight hundred thirty-six".