221395896 has 64 divisors (see below), whose sum is σ = 651175200. Its totient is φ = 69456384.

The previous prime is 221395871. The next prime is 221395903. The reversal of 221395896 is 698593122.

It is a super-2 number, since 2×221395896² = 98032285531285632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26475 + ... + 33818.

Almost surely, 2^221395896 is an apocalyptic number.

It is an amenable number.

221395896 is an abundant number, since it is smaller than the sum of its proper divisors (429779304).

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

221395896 is a wasteful number, since it uses less digits than its factorization.

221395896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60325 (or 60315 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 221395896 is about 14879.3782128152. The cubic root of 221395896 is about 604.9551645849.

The spelling of 221395896 in words is "two hundred twenty-one million, three hundred ninety-five thousand, eight hundred ninety-six".