228181206 has 64 divisors (see below), whose sum is σ = 522878976. Its totient is φ = 65709600.

The previous prime is 228181189. The next prime is 228181231. The reversal of 228181206 is 602181822.

It is a super-2 number, since 2×228181206² = 104133325543228872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 289545 + ... + 290331.

It is an arithmetic number, because the mean of its divisors is an integer number (8169984).

Almost surely, 2^228181206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228181206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261439488).

228181206 is an abundant number, since it is smaller than the sum of its proper divisors (294697770).

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

228181206 is a wasteful number, since it uses less digits than its factorization.

228181206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017.

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

The square root of 228181206 is about 15105.6680090620. The cubic root of 228181206 is about 611.0732748831.

The spelling of 228181206 in words is "two hundred twenty-eight million, one hundred eighty-one thousand, two hundred six".