228447155 has 8 divisors (see below), whose sum is σ = 286055712. Its totient is φ = 174811648.

The previous prime is 228447143. The next prime is 228447169. The reversal of 228447155 is 551744822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228447155 - 2¹⁰ = 228446131 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 993134 + ... + 993363.

It is an arithmetic number, because the mean of its divisors is an integer number (35756964).

Almost surely, 2^228447155 is an apocalyptic number.

228447155 is a deficient number, since it is larger than the sum of its proper divisors (57608557).

228447155 is a wasteful number, since it uses less digits than its factorization.

228447155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986525.

The product of its digits is 89600, while the sum is 38.

The square root of 228447155 is about 15114.4683995171. The cubic root of 228447155 is about 611.3105880728.

The spelling of 228447155 in words is "two hundred twenty-eight million, four hundred forty-seven thousand, one hundred fifty-five".