227017728 has 440 divisors, whose sum is σ = 856006272. Its totient is φ = 58392576.

The previous prime is 227017723. The next prime is 227017753. The reversal of 227017728 is 827710722.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 227017692 and 227017701.

It is not an unprimeable number, because it can be changed into a prime (227017723) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9870325 + ... + 9870347.

Almost surely, 2^227017728 is an apocalyptic number.

227017728 is a gapful number since it is divisible by the number (28) 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 227017728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428003136).

227017728 is an abundant number, since it is smaller than the sum of its proper divisors (628988544).

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

227017728 is a wasteful number, since it uses less digits than its factorization.

227017728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 227017728 is about 15067.1074861766. The cubic root of 227017728 is about 610.0328997753.

The spelling of 227017728 in words is "two hundred twenty-seven million, seventeen thousand, seven hundred twenty-eight".