228364817 has 4 divisors (see below), whose sum is σ = 235731456. Its totient is φ = 220998180.

The previous prime is 228364813. The next prime is 228364849. The reversal of 228364817 is 718463822.

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 228364817 - 2² = 228364813 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228364811) 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, 3683273 + ... + 3683334.

It is an arithmetic number, because the mean of its divisors is an integer number (58932864).

Almost surely, 2^228364817 is an apocalyptic number.

It is an amenable number.

228364817 is a deficient number, since it is larger than the sum of its proper divisors (7366639).

228364817 is an equidigital number, since it uses as much as digits as its factorization.

228364817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7366638.

The product of its digits is 129024, while the sum is 41.

The square root of 228364817 is about 15111.7443400820. The cubic root of 228364817 is about 611.2371354332.

The spelling of 228364817 in words is "two hundred twenty-eight million, three hundred sixty-four thousand, eight hundred seventeen".