221236896 has 48 divisors (see below), whose sum is σ = 593115264. Its totient is φ = 72175104.

The previous prime is 221236889. The next prime is 221236903. The reversal of 221236896 is 698632122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (221236889) and next prime (221236903).

It is a tau number, because it is divible by the number of its divisors (48).

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, 20005 + ... + 29028.

It is an arithmetic number, because the mean of its divisors is an integer number (12356568).

Almost surely, 2^221236896 is an apocalyptic number.

It is an amenable number.

221236896 is an abundant number, since it is smaller than the sum of its proper divisors (371878368).

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

221236896 is a wasteful number, since it uses less digits than its factorization.

221236896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49093 (or 49085 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 221236896 is about 14874.0342879798. The cubic root of 221236896 is about 604.8103095860.

The spelling of 221236896 in words is "two hundred twenty-one million, two hundred thirty-six thousand, eight hundred ninety-six".