220289386 has 8 divisors (see below), whose sum is σ = 331497504. Its totient is φ = 109790220.

The previous prime is 220289371. The next prime is 220289389. The reversal of 220289386 is 683982022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×220289386³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (220289389) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 176460 + ... + 177703.

It is an arithmetic number, because the mean of its divisors is an integer number (41437188).

Almost surely, 2^220289386 is an apocalyptic number.

220289386 is a deficient number, since it is larger than the sum of its proper divisors (111208118).

220289386 is a wasteful number, since it uses less digits than its factorization.

220289386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354476.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 220289386 is about 14842.1489683940. The cubic root of 220289386 is about 603.9456499054.

The spelling of 220289386 in words is "two hundred twenty million, two hundred eighty-nine thousand, three hundred eighty-six".