28155455786 has 8 divisors (see below), whose sum is σ = 44455982880. Its totient is φ = 13336794828.

The previous prime is 28155455749. The next prime is 28155455803. The reversal of 28155455786 is 68755455182.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 370466486 + ... + 370466561.

It is an arithmetic number, because the mean of its divisors is an integer number (5556997860).

Almost surely, 2^28155455786 is an apocalyptic number.

28155455786 is a deficient number, since it is larger than the sum of its proper divisors (16300527094).

28155455786 is a wasteful number, since it uses less digits than its factorization.

28155455786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740933068.

The product of its digits is 13440000, while the sum is 56.

The spelling of 28155455786 in words is "twenty-eight billion, one hundred fifty-five million, four hundred fifty-five thousand, seven hundred eighty-six".