228370465 has 4 divisors (see below), whose sum is σ = 274044564. Its totient is φ = 182696368.

The previous prime is 228370453. The next prime is 228370489. The reversal of 228370465 is 564073822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104693824 + 123676641 = 10232^2 + 11121^2 .

It is a cyclic number.

It is not a de Polignac number, because 228370465 - 2¹⁷ = 228239393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22837042 + ... + 22837051.

It is an arithmetic number, because the mean of its divisors is an integer number (68511141).

Almost surely, 2^228370465 is an apocalyptic number.

It is an amenable number.

228370465 is a deficient number, since it is larger than the sum of its proper divisors (45674099).

228370465 is an equidigital number, since it uses as much as digits as its factorization.

228370465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45674098.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 228370465 is about 15111.9312134485. The cubic root of 228370465 is about 611.2421745032.

The spelling of 228370465 in words is "two hundred twenty-eight million, three hundred seventy thousand, four hundred sixty-five".