221475468 has 48 divisors (see below), whose sum is σ = 535739904. Its totient is φ = 71163840.

The previous prime is 221475467. The next prime is 221475491. The reversal of 221475468 is 864574122.

221475468 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 (221475467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34858 + ... + 40718.

It is an arithmetic number, because the mean of its divisors is an integer number (11161248).

Almost surely, 2^221475468 is an apocalyptic number.

It is an amenable number.

221475468 is an abundant number, since it is smaller than the sum of its proper divisors (314264436).

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

221475468 is a wasteful number, since it uses less digits than its factorization.

221475468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5982 (or 5980 counting only the distinct ones).

The product of its digits is 107520, while the sum is 39.

The square root of 221475468 is about 14882.0518746576. The cubic root of 221475468 is about 605.0276316410.

The spelling of 221475468 in words is "two hundred twenty-one million, four hundred seventy-five thousand, four hundred sixty-eight".