228235641 has 16 divisors (see below), whose sum is σ = 309657600. Its totient is φ = 149505680.

The previous prime is 228235639. The next prime is 228235669. The reversal of 228235641 is 146532822.

It is a cyclic number.

It is not a de Polignac number, because 228235641 - 2¹ = 228235639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228235621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45160 + ... + 49958.

It is an arithmetic number, because the mean of its divisors is an integer number (19353600).

Almost surely, 2^228235641 is an apocalyptic number.

It is an amenable number.

228235641 is a deficient number, since it is larger than the sum of its proper divisors (81421959).

228235641 is a wasteful number, since it uses less digits than its factorization.

228235641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5076.

The product of its digits is 23040, while the sum is 33.

The square root of 228235641 is about 15107.4697087236. The cubic root of 228235641 is about 611.1218636480.

The spelling of 228235641 in words is "two hundred twenty-eight million, two hundred thirty-five thousand, six hundred forty-one".