228019 has 8 divisors (see below), whose sum is σ = 262080. Its totient is φ = 196200.

The previous prime is 228013. The next prime is 228023. The reversal of 228019 is 910822.

228019 = T₉₀ + T₉₁ + ... + T₁₂₇.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228019 is a prime.

It is a super-2 number, since 2×228019² = 103985328722, which contains 22 as substring.

It is a Duffinian number.

228019 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (228013) 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, 337 + ... + 754.

It is an arithmetic number, because the mean of its divisors is an integer number (32760).

2²²⁸⁰¹⁹ is an apocalyptic number.

228019 is a deficient number, since it is larger than the sum of its proper divisors (34061).

228019 is a wasteful number, since it uses less digits than its factorization.

228019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 228019 is about 477.5133505987. The cubic root of 228019 is about 61.0928443721.

It can be divided in two parts, 22801 and 9, that multiplied together give a square (205209 = 453²).

The spelling of 228019 in words is "two hundred twenty-eight thousand, nineteen".