227564220 has 96 divisors (see below), whose sum is σ = 690697728. Its totient is φ = 55648512.

The previous prime is 227564203. The next prime is 227564237. The reversal of 227564220 is 22465722.

227564220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (227564203) and next prime (227564237).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129387 + ... + 131133.

It is an arithmetic number, because the mean of its divisors is an integer number (7194768).

Almost surely, 2^227564220 is an apocalyptic number.

227564220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 227564220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345348864).

227564220 is an abundant number, since it is smaller than the sum of its proper divisors (463133508).

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

227564220 is a wasteful number, since it uses less digits than its factorization.

227564220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939 (or 1937 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 227564220 is about 15085.2318510522. The cubic root of 227564220 is about 610.5220112788.

The spelling of 227564220 in words is "two hundred twenty-seven million, five hundred sixty-four thousand, two hundred twenty".