227820 has 24 divisors (see below), whose sum is σ = 638064. Its totient is φ = 60736.

The previous prime is 227797. The next prime is 227827. The reversal of 227820 is 28722.

It is not an unprimeable number, because it can be changed into a prime (227827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1839 + ... + 1958.

It is an arithmetic number, because the mean of its divisors is an integer number (26586).

2²²⁷⁸²⁰ is an apocalyptic number.

227820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227820 is an abundant number, since it is smaller than the sum of its proper divisors (410244).

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

227820 is a wasteful number, since it uses less digits than its factorization.

227820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809 (or 3807 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 227820 is about 477.3049339783. The cubic root of 227820 is about 61.0750665926.

The spelling of 227820 in words is "two hundred twenty-seven thousand, eight hundred twenty".