28055835646 has 4 divisors (see below), whose sum is σ = 42083753472. Its totient is φ = 14027917822.

The previous prime is 28055835629. The next prime is 28055835649. The reversal of 28055835646 is 64653855082.

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

It is a junction number, because it is equal to n+sod(n) for n = 28055835593 and 28055835602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28055835649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7013958910 + ... + 7013958913.

It is an arithmetic number, because the mean of its divisors is an integer number (10520938368).

Almost surely, 2^28055835646 is an apocalyptic number.

28055835646 is a deficient number, since it is larger than the sum of its proper divisors (14027917826).

28055835646 is a wasteful number, since it uses less digits than its factorization.

28055835646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14027917825.

The product of its (nonzero) digits is 6912000, while the sum is 52.

The spelling of 28055835646 in words is "twenty-eight billion, fifty-five million, eight hundred thirty-five thousand, six hundred forty-six".