228333380 has 24 divisors (see below), whose sum is σ = 523091520. Its totient is φ = 83030240.

The previous prime is 228333361. The next prime is 228333389. The reversal of 228333380 is 83333822.

It is a super-2 number, since 2×228333380² = 104272264844448800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228333389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518720 + ... + 519159.

It is an arithmetic number, because the mean of its divisors is an integer number (21795480).

Almost surely, 2^228333380 is an apocalyptic number.

228333380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228333380 is an abundant number, since it is smaller than the sum of its proper divisors (294758140).

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

228333380 is a wasteful number, since it uses less digits than its factorization.

228333380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037899 (or 1037897 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 228333380 is about 15110.7041530168. The cubic root of 228333380 is about 611.2090862444.

It can be divided in two parts, 2 and 28333380, that added together give a palindrome (28333382).

The spelling of 228333380 in words is "two hundred twenty-eight million, three hundred thirty-three thousand, three hundred eighty".