228581155 has 16 divisors (see below), whose sum is σ = 300534624. Its totient is φ = 165518080.

The previous prime is 228581147. The next prime is 228581189. The reversal of 228581155 is 551185822.

It is not a de Polignac number, because 228581155 - 2³ = 228581147 is a prime.

It is a super-2 number, since 2×228581155² = 104498688842268050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3897 + ... + 21733.

It is an arithmetic number, because the mean of its divisors is an integer number (18783414).

Almost surely, 2^228581155 is an apocalyptic number.

228581155 is a deficient number, since it is larger than the sum of its proper divisors (71953469).

228581155 is a wasteful number, since it uses less digits than its factorization.

228581155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18086.

The product of its digits is 32000, while the sum is 37.

The square root of 228581155 is about 15118.9005883364. The cubic root of 228581155 is about 611.4300899734.

The spelling of 228581155 in words is "two hundred twenty-eight million, five hundred eighty-one thousand, one hundred fifty-five".