228526345 has 4 divisors (see below), whose sum is σ = 274231620. Its totient is φ = 182821072.

The previous prime is 228526297. The next prime is 228526373. The reversal of 228526345 is 543625822.

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 62425801 + 166100544 = 7901^2 + 12888^2 .

It is a cyclic number.

It is not a de Polignac number, because 228526345 - 2¹³ = 228518153 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22852630 + ... + 22852639.

It is an arithmetic number, because the mean of its divisors is an integer number (68557905).

Almost surely, 2^228526345 is an apocalyptic number.

It is an amenable number.

228526345 is a deficient number, since it is larger than the sum of its proper divisors (45705275).

228526345 is an equidigital number, since it uses as much as digits as its factorization.

228526345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45705274.

The product of its digits is 115200, while the sum is 37.

The square root of 228526345 is about 15117.0878478628. The cubic root of 228526345 is about 611.3812157750.

The spelling of 228526345 in words is "two hundred twenty-eight million, five hundred twenty-six thousand, three hundred forty-five".