228632120 has 32 divisors (see below), whose sum is σ = 517842720. Its totient is φ = 90844800.

The previous prime is 228632119. The next prime is 228632171. The reversal of 228632120 is 21236822.

It is a self number, because there is not a number n which added to its sum of digits gives 228632120.

It is a congruent number.

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, 12887 + ... + 24966.

It is an arithmetic number, because the mean of its divisors is an integer number (16182585).

Almost surely, 2^228632120 is an apocalyptic number.

228632120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228632120 is an abundant number, since it is smaller than the sum of its proper divisors (289210600).

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

228632120 is a wasteful number, since it uses less digits than its factorization.

228632120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38015 (or 38011 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 228632120 is about 15120.5859674816. The cubic root of 228632120 is about 611.4755285674.

Adding to 228632120 its reverse (21236822), we get a palindrome (249868942).

The spelling of 228632120 in words is "two hundred twenty-eight million, six hundred thirty-two thousand, one hundred twenty".