221293248 has 56 divisors (see below), whose sum is σ = 638738880. Its totient is φ = 67057920.

The previous prime is 221293243. The next prime is 221293253. The reversal of 221293248 is 842392122.

221293248 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221293243) and next prime (221293253).

It is a super-2 number, since 2×221293248² = 97941403220779008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (221293243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50278 + ... + 54501.

Almost surely, 2^221293248 is an apocalyptic number.

It is an amenable number.

221293248 is an abundant number, since it is smaller than the sum of its proper divisors (417445632).

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

221293248 is a wasteful number, since it uses less digits than its factorization.

221293248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104805 (or 104795 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 221293248 is about 14875.9284752247. The cubic root of 221293248 is about 604.8616563217.

The spelling of 221293248 in words is "two hundred twenty-one million, two hundred ninety-three thousand, two hundred forty-eight".