228144413 has 4 divisors (see below), whose sum is σ = 260736480. Its totient is φ = 195552348.

The previous prime is 228144409. The next prime is 228144443. The reversal of 228144413 is 314441822.

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, and also an emirpimes, since its reverse is a distinct semiprime: 314441822 = 2 ⋅157220911.

It is a cyclic number.

It is not a de Polignac number, because 228144413 - 2² = 228144409 is a prime.

It is a super-2 number, since 2×228144413² = 104099746366229138, 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 (228144443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16296023 + ... + 16296036.

It is an arithmetic number, because the mean of its divisors is an integer number (65184120).

Almost surely, 2^228144413 is an apocalyptic number.

It is an amenable number.

228144413 is a deficient number, since it is larger than the sum of its proper divisors (32592067).

228144413 is an equidigital number, since it uses as much as digits as its factorization.

228144413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32592066.

The product of its digits is 6144, while the sum is 29.

The square root of 228144413 is about 15104.4501058463. The cubic root of 228144413 is about 611.0404290176.

The spelling of 228144413 in words is "two hundred twenty-eight million, one hundred forty-four thousand, four hundred thirteen".