28212304855 has 8 divisors (see below), whose sum is σ = 38691160992. Its totient is φ = 19345580448.

The previous prime is 28212304853. The next prime is 28212304903. The reversal of 28212304855 is 55840321282.

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 28212304855 - 2¹ = 28212304853 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 (28212304853) 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, 403032892 + ... + 403032961.

It is an arithmetic number, because the mean of its divisors is an integer number (4836395124).

Almost surely, 2^28212304855 is an apocalyptic number.

28212304855 is a deficient number, since it is larger than the sum of its proper divisors (10478856137).

28212304855 is an equidigital number, since it uses as much as digits as its factorization.

28212304855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806065865.

The product of its (nonzero) digits is 153600, while the sum is 40.

The spelling of 28212304855 in words is "twenty-eight billion, two hundred twelve million, three hundred four thousand, eight hundred fifty-five".