227720 has 16 divisors (see below), whose sum is σ = 512460. Its totient is φ = 91072.

The previous prime is 227719. The next prime is 227729. The reversal of 227720 is 27722.

227720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 209764 + 17956 = 458^2 + 134^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 227692 and 227701.

It is not an unprimeable number, because it can be changed into a prime (227729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2807 + ... + 2886.

2²²⁷⁷²⁰ is an apocalyptic number.

227720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227720 is an abundant number, since it is smaller than the sum of its proper divisors (284740).

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

227720 is a wasteful number, since it uses less digits than its factorization.

227720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5704 (or 5700 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 227720 is about 477.2001676446. The cubic root of 227720 is about 61.0661291266.

The spelling of 227720 in words is "two hundred twenty-seven thousand, seven hundred twenty", and thus it is an iban number.