228001242 has 32 divisors (see below), whose sum is σ = 524611584. Its totient is φ = 64710000.

The previous prime is 228001223. The next prime is 228001247. The reversal of 228001242 is 242100822.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (228001247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11634 + ... + 24317.

It is an arithmetic number, because the mean of its divisors is an integer number (16394112).

Almost surely, 2^228001242 is an apocalyptic number.

228001242 is an abundant number, since it is smaller than the sum of its proper divisors (296610342).

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

228001242 is a wasteful number, since it uses less digits than its factorization.

228001242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36114.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 228001242 is about 15099.7099972152. The cubic root of 228001242 is about 610.9125837136.

It can be divided in two parts, 22800 and 1242, that added together give a palindrome (24042).

The spelling of 228001242 in words is "two hundred twenty-eight million, one thousand, two hundred forty-two".