228001617 has 6 divisors (see below), whose sum is σ = 329335682. Its totient is φ = 152001072.

The previous prime is 228001607. The next prime is 228001619. The reversal of 228001617 is 716100822.

228001617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 224280576 + 3721041 = 14976^2 + 1929^2 .

It is not a de Polignac number, because 228001617 - 2⁷ = 228001489 is a prime.

It is a super-2 number, since 2×228001617² = 103969474709229378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228001619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12666748 + ... + 12666765.

Almost surely, 2^228001617 is an apocalyptic number.

It is an amenable number.

228001617 is a deficient number, since it is larger than the sum of its proper divisors (101334065).

228001617 is a wasteful number, since it uses less digits than its factorization.

228001617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25333519 (or 25333516 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 228001617 is about 15099.7224146671. The cubic root of 228001617 is about 610.9129186417.

The spelling of 228001617 in words is "two hundred twenty-eight million, one thousand, six hundred seventeen".