228000001 has 8 divisors (see below), whose sum is σ = 236675880. Its totient is φ = 219378432.

The previous prime is 227999977. The next prime is 228000037. The reversal of 228000001 is 100000822.

It can be written as a sum of positive squares in 4 ways, for example, as 41267776 + 186732225 = 6424^2 + 13665^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228000001 - 2⁹ = 227999489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228000301) 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, 4920 + ... + 21913.

It is an arithmetic number, because the mean of its divisors is an integer number (29584485).

Almost surely, 2^228000001 is an apocalyptic number.

It is an amenable number.

228000001 is a deficient number, since it is larger than the sum of its proper divisors (8675879).

228000001 is a wasteful number, since it uses less digits than its factorization.

228000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27155.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 228000001 is about 15099.6689036548. The cubic root of 228000001 is about 610.9114753221.

Adding to 228000001 its reverse (100000822), we get a palindrome (328000823).

The spelling of 228000001 in words is "two hundred twenty-eight million, one", and thus it is an aban number.