221250768 has 40 divisors (see below), whose sum is σ = 579623616. Its totient is φ = 72710400.

The previous prime is 221250749. The next prime is 221250793. The reversal of 221250768 is 867052122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29053 + ... + 35868.

Almost surely, 2^221250768 is an apocalyptic number.

It is an amenable number.

221250768 is an abundant number, since it is smaller than the sum of its proper divisors (358372848).

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

221250768 is a wasteful number, since it uses less digits than its factorization.

221250768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65003 (or 64997 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 221250768 is about 14874.5005966587. The cubic root of 221250768 is about 604.8229502643.

The spelling of 221250768 in words is "two hundred twenty-one million, two hundred fifty thousand, seven hundred sixty-eight".