221482008 has 48 divisors (see below), whose sum is σ = 654381000. Its totient is φ = 67115520.

The previous prime is 221482003. The next prime is 221482013. The reversal of 221482008 is 800284122.

It is an interprime number because it is at equal distance from previous prime (221482003) and next prime (221482013).

It is a super-4 number, since 4×221482008⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221482003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139033 + ... + 140616.

Almost surely, 2^221482008 is an apocalyptic number.

It is an amenable number.

221482008 is an abundant number, since it is smaller than the sum of its proper divisors (432898992).

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

221482008 is a wasteful number, since it uses less digits than its factorization.

221482008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279672 (or 279665 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 221482008 is about 14882.2716008007. The cubic root of 221482008 is about 605.0335869157.

The spelling of 221482008 in words is "two hundred twenty-one million, four hundred eighty-two thousand, eight".