221485008 has 20 divisors (see below), whose sum is σ = 572169728. Its totient is φ = 73828320.

The previous prime is 221484983. The next prime is 221485013. The reversal of 221485008 is 800584122.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2307088 + ... + 2307183.

Almost surely, 2^221485008 is an apocalyptic number.

It is an amenable number.

221485008 is an abundant number, since it is smaller than the sum of its proper divisors (350684720).

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

221485008 is a wasteful number, since it uses less digits than its factorization.

221485008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614282 (or 4614276 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 221485008 is about 14882.3723915241. The cubic root of 221485008 is about 605.0363186539.

The spelling of 221485008 in words is "two hundred twenty-one million, four hundred eighty-five thousand, eight".