221487162 has 32 divisors (see below), whose sum is σ = 478157568. Its totient is φ = 67991616.

The previous prime is 221487107. The next prime is 221487191. The reversal of 221487162 is 261784122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33048 + ... + 39180.

It is an arithmetic number, because the mean of its divisors is an integer number (14942424).

Almost surely, 2^221487162 is an apocalyptic number.

221487162 is an abundant number, since it is smaller than the sum of its proper divisors (256670406).

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

221487162 is a wasteful number, since it uses less digits than its factorization.

221487162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6614.

The product of its digits is 10752, while the sum is 33.

The square root of 221487162 is about 14882.4447588425. Note that the first 3 decimals coincide. The cubic root of 221487162 is about 605.0382800267.

The spelling of 221487162 in words is "two hundred twenty-one million, four hundred eighty-seven thousand, one hundred sixty-two".