228620115 has 24 divisors (see below), whose sum is σ = 413506080. Its totient is φ = 116628864.

The previous prime is 228620107. The next prime is 228620153. The reversal of 228620115 is 511026822.

It is a happy number.

228620115 is a `hidden beast` number, since 2 + 28 + 620 + 1 + 15 = 666.

It is not a de Polignac number, because 228620115 - 2³ = 228620107 is a prime.

It is a super-2 number, since 2×228620115² = 104534313965226450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109410 + ... + 111479.

It is an arithmetic number, because the mean of its divisors is an integer number (17229420).

Almost surely, 2^228620115 is an apocalyptic number.

228620115 is a deficient number, since it is larger than the sum of its proper divisors (184885965).

228620115 is a wasteful number, since it uses less digits than its factorization.

228620115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220923 (or 220920 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 228620115 is about 15120.1889869142. The cubic root of 228620115 is about 611.4648259414.

Adding to 228620115 its reverse (511026822), we get a palindrome (739646937).

The spelling of 228620115 in words is "two hundred twenty-eight million, six hundred twenty thousand, one hundred fifteen".