228622897 has 4 divisors (see below), whose sum is σ = 228755956. Its totient is φ = 228489840.

The previous prime is 228622883. The next prime is 228622907. The reversal of 228622897 is 798226822.

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 15492096 + 213130801 = 3936^2 + 14599^2 .

It is a cyclic number.

It is not a de Polignac number, because 228622897 - 2¹¹ = 228620849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228622397) 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, 63918 + ... + 67399.

It is an arithmetic number, because the mean of its divisors is an integer number (57188989).

Almost surely, 2^228622897 is an apocalyptic number.

It is an amenable number.

228622897 is a deficient number, since it is larger than the sum of its proper divisors (133059).

228622897 is a wasteful number, since it uses less digits than its factorization.

228622897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133058.

The product of its digits is 387072, while the sum is 46.

The square root of 228622897 is about 15120.2809828389. The cubic root of 228622897 is about 611.4673061668.

The spelling of 228622897 in words is "two hundred twenty-eight million, six hundred twenty-two thousand, eight hundred ninety-seven".