28428854855047 has 8 divisors (see below), whose sum is σ = 28626679915344. Its totient is φ = 28231715497728.

The previous prime is 28428854855033. The next prime is 28428854855057. The reversal of 28428854855047 is 74055845882482.

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

It is a cyclic number.

It is not a de Polignac number, because 28428854855047 - 2¹⁹ = 28428854330759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28428854855057) 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, 171342538 + ... + 171508375.

It is an arithmetic number, because the mean of its divisors is an integer number (3578334989418).

Almost surely, 2^{28428854855047} is an apocalyptic number.

28428854855047 is a deficient number, since it is larger than the sum of its proper divisors (197825060297).

28428854855047 is a wasteful number, since it uses less digits than its factorization.

28428854855047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342851489.

The product of its (nonzero) digits is 917504000, while the sum is 70.

The spelling of 28428854855047 in words is "twenty-eight trillion, four hundred twenty-eight billion, eight hundred fifty-four million, eight hundred fifty-five thousand, forty-seven".