228167409 has 16 divisors (see below), whose sum is σ = 330567680. Its totient is φ = 139456080.

The previous prime is 228167399. The next prime is 228167441. The reversal of 228167409 is 904761822.

It is not a de Polignac number, because 228167409 - 2¹¹ = 228165361 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228167449) 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, 62797 + ... + 66330.

It is an arithmetic number, because the mean of its divisors is an integer number (20660480).

Almost surely, 2^228167409 is an apocalyptic number.

It is an amenable number.

228167409 is a deficient number, since it is larger than the sum of its proper divisors (102400271).

228167409 is a wasteful number, since it uses less digits than its factorization.

228167409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129180.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 228167409 is about 15105.2113192765. The cubic root of 228167409 is about 611.0609584321.

The spelling of 228167409 in words is "two hundred twenty-eight million, one hundred sixty-seven thousand, four hundred nine".