213845457228 has 48 divisors (see below), whose sum is σ = 537894614880. Its totient is φ = 65732557824.

The previous prime is 213845457223. The next prime is 213845457229. The reversal of 213845457228 is 822754548312.

213845457228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (213845457223) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 531933 + ... + 842996.

It is an arithmetic number, because the mean of its divisors is an integer number (11206137810).

Almost surely, 2^213845457228 is an apocalyptic number.

It is an amenable number.

213845457228 is an abundant number, since it is smaller than the sum of its proper divisors (324049157652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213845457228 is a wasteful number, since it uses less digits than its factorization.

213845457228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375946 (or 1375944 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 51.

The spelling of 213845457228 in words is "two hundred thirteen billion, eight hundred forty-five million, four hundred fifty-seven thousand, two hundred twenty-eight".