228178345 has 4 divisors (see below), whose sum is σ = 273814020. Its totient is φ = 182542672.

The previous prime is 228178219. The next prime is 228178367. The reversal of 228178345 is 543871822.

It is a happy number.

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 31505769 + 196672576 = 5613^2 + 14024^2 .

It is a cyclic number.

It is not a de Polignac number, because 228178345 - 2¹³ = 228170153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228178298 and 228178307.

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, 22817830 + ... + 22817839.

It is an arithmetic number, because the mean of its divisors is an integer number (68453505).

Almost surely, 2^228178345 is an apocalyptic number.

It is an amenable number.

228178345 is a deficient number, since it is larger than the sum of its proper divisors (45635675).

228178345 is an equidigital number, since it uses as much as digits as its factorization.

228178345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45635674.

The product of its digits is 107520, while the sum is 40.

The square root of 228178345 is about 15105.5733092127. The cubic root of 228178345 is about 611.0707209363.

The spelling of 228178345 in words is "two hundred twenty-eight million, one hundred seventy-eight thousand, three hundred forty-five".