228247469 has 4 divisors (see below), whose sum is σ = 238171296. Its totient is φ = 218323644.

The previous prime is 228247447. The next prime is 228247471. The reversal of 228247469 is 964742822.

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 228247469 - 2¹² = 228243373 is a prime.

It is a super-2 number, since 2×228247469² = 104193814209811922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228247489) 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, 4961879 + ... + 4961924.

It is an arithmetic number, because the mean of its divisors is an integer number (59542824).

Almost surely, 2^228247469 is an apocalyptic number.

It is an amenable number.

228247469 is a deficient number, since it is larger than the sum of its proper divisors (9923827).

228247469 is an equidigital number, since it uses as much as digits as its factorization.

228247469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9923826.

The product of its digits is 387072, while the sum is 44.

The square root of 228247469 is about 15107.8611656316. The cubic root of 228247469 is about 611.1324203172.

The spelling of 228247469 in words is "two hundred twenty-eight million, two hundred forty-seven thousand, four hundred sixty-nine".