228475511 has 16 divisors (see below), whose sum is σ = 253507968. Its totient is φ = 204180000.

The previous prime is 228475463. The next prime is 228475519. The reversal of 228475511 is 115574822.

It is a de Polignac number, because none of the positive numbers 2^k-228475511 is a prime.

It is a super-2 number, since 2×228475511² = 104402118253422242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228475519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228665 + ... + 229661.

It is an arithmetic number, because the mean of its divisors is an integer number (15844248).

Almost surely, 2^228475511 is an apocalyptic number.

228475511 is a deficient number, since it is larger than the sum of its proper divisors (25032457).

228475511 is a wasteful number, since it uses less digits than its factorization.

228475511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342.

The product of its digits is 22400, while the sum is 35.

The square root of 228475511 is about 15115.4064120023. The cubic root of 228475511 is about 611.3358799992.

The spelling of 228475511 in words is "two hundred twenty-eight million, four hundred seventy-five thousand, five hundred eleven".