221247882 has 32 divisors (see below), whose sum is σ = 496742400. Its totient is φ = 72987264.

The previous prime is 221247823. The next prime is 221247947. The reversal of 221247882 is 288742122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15882 + ... + 26357.

It is an arithmetic number, because the mean of its divisors is an integer number (15523200).

Almost surely, 2^221247882 is an apocalyptic number.

221247882 is an abundant number, since it is smaller than the sum of its proper divisors (275494518).

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

221247882 is a wasteful number, since it uses less digits than its factorization.

221247882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42347 (or 42341 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 221247882 is about 14874.4035846820. The cubic root of 221247882 is about 604.8203204781.

The spelling of 221247882 in words is "two hundred twenty-one million, two hundred forty-seven thousand, eight hundred eighty-two".