228011826 has 16 divisors (see below), whose sum is σ = 521169984. Its totient is φ = 65146224.

The previous prime is 228011809. The next prime is 228011867. The reversal of 228011826 is 628110822.

It is a junction number, because it is equal to n+sod(n) for n = 228011793 and 228011802.

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, 2714385 + ... + 2714468.

It is an arithmetic number, because the mean of its divisors is an integer number (32573124).

Almost surely, 2^228011826 is an apocalyptic number.

228011826 is an abundant number, since it is smaller than the sum of its proper divisors (293158158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228011826 is a wasteful number, since it uses less digits than its factorization.

228011826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5428865.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 228011826 is about 15100.0604634551. The cubic root of 228011826 is about 610.9220365842.

The spelling of 228011826 in words is "two hundred twenty-eight million, eleven thousand, eight hundred twenty-six".