228081449 has 4 divisors (see below), whose sum is σ = 230295936. Its totient is φ = 225866964.

The previous prime is 228081437. The next prime is 228081463. The reversal of 228081449 is 944180822.

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 228081449 - 2⁸ = 228081193 is a prime.

It is a super-2 number, since 2×228081449² = 104042294755879202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228086449) 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, 1107089 + ... + 1107294.

It is an arithmetic number, because the mean of its divisors is an integer number (57573984).

Almost surely, 2^228081449 is an apocalyptic number.

It is an amenable number.

228081449 is a deficient number, since it is larger than the sum of its proper divisors (2214487).

228081449 is a wasteful number, since it uses less digits than its factorization.

228081449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214486.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 228081449 is about 15102.3656756152. The cubic root of 228081449 is about 610.9842115705.

The spelling of 228081449 in words is "two hundred twenty-eight million, eighty-one thousand, four hundred forty-nine".