228162636 has 96 divisors (see below), whose sum is σ = 643742400. Its totient is φ = 69465600.

The previous prime is 228162611. The next prime is 228162643. The reversal of 228162636 is 636261822.

228162636 is a `hidden beast` number, since 2 + 2 + 8 + 16 + 2 + 636 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (41472) is a multiple of the sum of its prime divisors (1728).

It is a self number, because there is not a number n which added to its sum of digits gives 228162636.

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, 141000 + ... + 142608.

It is an arithmetic number, because the mean of its divisors is an integer number (6705650).

Almost surely, 2^228162636 is an apocalyptic number.

228162636 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228162636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321871200).

228162636 is an abundant number, since it is smaller than the sum of its proper divisors (415579764).

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

228162636 is a wasteful number, since it uses less digits than its factorization.

228162636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736 (or 1728 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 228162636 is about 15105.0533266189. The cubic root of 228162636 is about 611.0566975047.

It can be divided in two parts, 22816 and 2636, that added together give a palindrome (25452).

The spelling of 228162636 in words is "two hundred twenty-eight million, one hundred sixty-two thousand, six hundred thirty-six".