228822465 has 32 divisors (see below), whose sum is σ = 394989696. Its totient is φ = 112686080.

The previous prime is 228822457. The next prime is 228822493. The reversal of 228822465 is 564228822.

228822465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228822465 - 2³ = 228822457 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5050 + ... + 21980.

It is an arithmetic number, because the mean of its divisors is an integer number (12343428).

Almost surely, 2^228822465 is an apocalyptic number.

It is an amenable number.

228822465 is a deficient number, since it is larger than the sum of its proper divisors (166167231).

228822465 is a wasteful number, since it uses less digits than its factorization.

228822465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17009.

The product of its digits is 122880, while the sum is 39.

The square root of 228822465 is about 15126.8788915625. The cubic root of 228822465 is about 611.6451737662.

It can be divided in two parts, 2288 and 22465, that added together give a triangular number (24753 = T₂₂₂).

The spelling of 228822465 in words is "two hundred twenty-eight million, eight hundred twenty-two thousand, four hundred sixty-five".