226817220 has 48 divisors (see below), whose sum is σ = 725816448. Its totient is φ = 51843840.

The previous prime is 226817189. The next prime is 226817233. The reversal of 226817220 is 22718622.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 269601 + ... + 270440.

It is an arithmetic number, because the mean of its divisors is an integer number (15121176).

Almost surely, 2^226817220 is an apocalyptic number.

226817220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

226817220 is an abundant number, since it is smaller than the sum of its proper divisors (498999228).

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

226817220 is a wasteful number, since it uses less digits than its factorization.

226817220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540060 (or 540058 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 226817220 is about 15060.4521844465. The cubic root of 226817220 is about 609.8532478652.

The spelling of 226817220 in words is "two hundred twenty-six million, eight hundred seventeen thousand, two hundred twenty".