220455819 has 12 divisors (see below), whose sum is σ = 318682000. Its totient is φ = 146857104.

The previous prime is 220455791. The next prime is 220455827. The reversal of 220455819 is 918554022.

It is not a de Polignac number, because 220455819 - 2⁷ = 220455691 is a prime.

It is a super-2 number, since 2×220455819² = 97201536261921522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220455869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3837 + ... + 21345.

Almost surely, 2^220455819 is an apocalyptic number.

220455819 is a deficient number, since it is larger than the sum of its proper divisors (98226181).

220455819 is a wasteful number, since it uses less digits than its factorization.

220455819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18914 (or 18911 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 220455819 is about 14847.7546787385. The cubic root of 220455819 is about 604.0977092559.

The spelling of 220455819 in words is "two hundred twenty million, four hundred fifty-five thousand, eight hundred nineteen".