227781020 has 12 divisors (see below), whose sum is σ = 478340184. Its totient is φ = 91112400.

The previous prime is 227781013. The next prime is 227781023. The reversal of 227781020 is 20187722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227781023) 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, 5694506 + ... + 5694545.

It is an arithmetic number, because the mean of its divisors is an integer number (39861682).

Almost surely, 2^227781020 is an apocalyptic number.

227781020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227781020 is an abundant number, since it is smaller than the sum of its proper divisors (250559164).

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

227781020 is a wasteful number, since it uses less digits than its factorization.

227781020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11389060 (or 11389058 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 227781020 is about 15092.4159762445. The cubic root of 227781020 is about 610.7158307947.

The spelling of 227781020 in words is "two hundred twenty-seven million, seven hundred eighty-one thousand, twenty".