227121328 has 20 divisors (see below), whose sum is σ = 502911760. Its totient is φ = 97337664.

The previous prime is 227121319. The next prime is 227121353. The reversal of 227121328 is 823121722.

227121328 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 227121296 and 227121305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013823 + ... + 1014046.

It is an arithmetic number, because the mean of its divisors is an integer number (25145588).

Almost surely, 2^227121328 is an apocalyptic number.

227121328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

227121328 is an abundant number, since it is smaller than the sum of its proper divisors (275790432).

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

227121328 is a wasteful number, since it uses less digits than its factorization.

227121328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027884 (or 2027878 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 227121328 is about 15070.5450465469. The cubic root of 227121328 is about 610.1256822461.

The spelling of 227121328 in words is "two hundred twenty-seven million, one hundred twenty-one thousand, three hundred twenty-eight".