228466446 has 32 divisors (see below), whose sum is σ = 492817920. Its totient is φ = 70192224.

The previous prime is 228466423. The next prime is 228466477. The reversal of 228466446 is 644664822.

It is a junction number, because it is equal to n+sod(n) for n = 228466398 and 228466407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62415 + ... + 65973.

It is an arithmetic number, because the mean of its divisors is an integer number (15400560).

Almost surely, 2^228466446 is an apocalyptic number.

228466446 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

228466446 is an abundant number, since it is smaller than the sum of its proper divisors (264351474).

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

228466446 is a wasteful number, since it uses less digits than its factorization.

228466446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4400.

The product of its digits is 442368, while the sum is 42.

The square root of 228466446 is about 15115.1065494094. The cubic root of 228466446 is about 611.3277947664.

It can be divided in two parts, 22846 and 6446, that added together give a palindrome (29292).

The spelling of 228466446 in words is "two hundred twenty-eight million, four hundred sixty-six thousand, four hundred forty-six".