220081886 has 4 divisors (see below), whose sum is σ = 330122832. Its totient is φ = 110040942.

The previous prime is 220081877. The next prime is 220081907. The reversal of 220081886 is 688180022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 688180022 = 2 ⋅344090011.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 55020470 + ... + 55020473.

It is an arithmetic number, because the mean of its divisors is an integer number (82530708).

Almost surely, 2^220081886 is an apocalyptic number.

220081886 is a deficient number, since it is larger than the sum of its proper divisors (110040946).

220081886 is a wasteful number, since it uses less digits than its factorization.

220081886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110040945.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 220081886 is about 14835.1570938767. The cubic root of 220081886 is about 603.7559629169.

The spelling of 220081886 in words is "two hundred twenty million, eighty-one thousand, eight hundred eighty-six".