228308629 has 4 divisors (see below), whose sum is σ = 233618176. Its totient is φ = 222999084.

The previous prime is 228308627. The next prime is 228308651. The reversal of 228308629 is 926803822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228308629 - 2¹ = 228308627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228308591 and 228308600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228308627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2654709 + ... + 2654794.

It is an arithmetic number, because the mean of its divisors is an integer number (58404544).

Almost surely, 2^228308629 is an apocalyptic number.

It is an amenable number.

228308629 is a deficient number, since it is larger than the sum of its proper divisors (5309547).

228308629 is an equidigital number, since it uses as much as digits as its factorization.

228308629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5309546.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 228308629 is about 15109.8851418533. The cubic root of 228308629 is about 611.1870007266.

The spelling of 228308629 in words is "two hundred twenty-eight million, three hundred eight thousand, six hundred twenty-nine".