221446076 has 12 divisors (see below), whose sum is σ = 388432800. Its totient is φ = 110465280.

The previous prime is 221446067. The next prime is 221446081. The reversal of 221446076 is 670644122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62501 + ... + 65948.

It is an arithmetic number, because the mean of its divisors is an integer number (32369400).

Almost surely, 2^221446076 is an apocalyptic number.

It is an amenable number.

221446076 is a deficient number, since it is larger than the sum of its proper divisors (166986724).

221446076 is a wasteful number, since it uses less digits than its factorization.

221446076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128884 (or 128882 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 221446076 is about 14881.0643436550. The cubic root of 221446076 is about 605.0008660598. Note that the first 3 decimals are identical.

The spelling of 221446076 in words is "two hundred twenty-one million, four hundred forty-six thousand, seventy-six".