228429 has 12 divisors (see below), whose sum is σ = 349596. Its totient is φ = 143232.

The previous prime is 228427. The next prime is 228443. The reversal of 228429 is 924822.

It can be written as a sum of positive squares in 2 ways, for example, as 189225 + 39204 = 435^2 + 198^2 .

It is not a de Polignac number, because 228429 - 2¹ = 228427 is a prime.

228429 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 594 + ... + 899.

It is an arithmetic number, because the mean of its divisors is an integer number (29133).

2²²⁸⁴²⁹ is an apocalyptic number.

It is an amenable number.

228429 is a deficient number, since it is larger than the sum of its proper divisors (121167).

228429 is a wasteful number, since it uses less digits than its factorization.

228429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516 (or 1513 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 228429 is about 477.9424651566. The cubic root of 228429 is about 61.1294393755.

The spelling of 228429 in words is "two hundred twenty-eight thousand, four hundred twenty-nine".