28056442154 has 16 divisors (see below), whose sum is σ = 45502521120. Its totient is φ = 12897534000.

The previous prime is 28056442111. The next prime is 28056442159. The reversal of 28056442154 is 45124465082.

It is not an unprimeable number, because it can be changed into a prime (28056442159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2143064 + ... + 2156115.

It is an arithmetic number, because the mean of its divisors is an integer number (2843907570).

Almost surely, 2^28056442154 is an apocalyptic number.

28056442154 is a deficient number, since it is larger than the sum of its proper divisors (17446078966).

28056442154 is a wasteful number, since it uses less digits than its factorization.

28056442154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4299445.

The product of its (nonzero) digits is 307200, while the sum is 41.

The spelling of 28056442154 in words is "twenty-eight billion, fifty-six million, four hundred forty-two thousand, one hundred fifty-four".