28778075846 has 8 divisors (see below), whose sum is σ = 46487661024. Its totient is φ = 13282188840.

The previous prime is 28778075831. The next prime is 28778075857. The reversal of 28778075846 is 64857087782.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553424510 + ... + 553424561.

It is an arithmetic number, because the mean of its divisors is an integer number (5810957628).

Almost surely, 2^28778075846 is an apocalyptic number.

28778075846 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28778075846 is a deficient number, since it is larger than the sum of its proper divisors (17709585178).

28778075846 is a wasteful number, since it uses less digits than its factorization.

28778075846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106849086.

The product of its (nonzero) digits is 42147840, while the sum is 62.

The spelling of 28778075846 in words is "twenty-eight billion, seven hundred seventy-eight million, seventy-five thousand, eight hundred forty-six".