228461465 has 4 divisors (see below), whose sum is σ = 274153764. Its totient is φ = 182769168.

The previous prime is 228461447. The next prime is 228461473. The reversal of 228461465 is 564164822.

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 127599616 + 100861849 = 11296^2 + 10043^2 .

It is a cyclic number.

It is not a de Polignac number, because 228461465 - 2¹⁴ = 228445081 is a prime.

It is a Duffinian number.

It is a Curzon 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, 22846142 + ... + 22846151.

It is an arithmetic number, because the mean of its divisors is an integer number (68538441).

Almost surely, 2^228461465 is an apocalyptic number.

It is an amenable number.

228461465 is a deficient number, since it is larger than the sum of its proper divisors (45692299).

228461465 is an equidigital number, since it uses as much as digits as its factorization.

228461465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45692298.

The product of its digits is 92160, while the sum is 38.

The square root of 228461465 is about 15114.9417795769. The cubic root of 228461465 is about 611.3233520340.

The spelling of 228461465 in words is "two hundred twenty-eight million, four hundred sixty-one thousand, four hundred sixty-five".