221468548 has 12 divisors (see below), whose sum is σ = 442937152. Its totient is φ = 94915080.

The previous prime is 221468543. The next prime is 221468551. The reversal of 221468548 is 845864122.

It is a happy number.

221468548 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

221468548 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 221468548.

It is not an unprimeable number, because it can be changed into a prime (221468543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3954768 + ... + 3954823.

Almost surely, 2^221468548 is an apocalyptic number.

221468548 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

221468548 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221468548 is a wasteful number, since it uses less digits than its factorization.

221468548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7909602 (or 7909600 counting only the distinct ones).

The product of its digits is 122880, while the sum is 40.

The square root of 221468548 is about 14881.8193780196. The cubic root of 221468548 is about 605.0213302135.

The spelling of 221468548 in words is "two hundred twenty-one million, four hundred sixty-eight thousand, five hundred forty-eight".