228426340 has 24 divisors (see below), whose sum is σ = 500552640. Its totient is φ = 87397728.

The previous prime is 228426337. The next prime is 228426349. The reversal of 228426340 is 43624822.

228426340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (228426349) 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, 247830 + ... + 248749.

It is an arithmetic number, because the mean of its divisors is an integer number (20856360).

Almost surely, 2^228426340 is an apocalyptic number.

228426340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228426340 is an abundant number, since it is smaller than the sum of its proper divisors (272126300).

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

228426340 is a wasteful number, since it uses less digits than its factorization.

228426340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496611 (or 496609 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 228426340 is about 15113.7798051976. The cubic root of 228426340 is about 611.2920209540.

The spelling of 228426340 in words is "two hundred twenty-eight million, four hundred twenty-six thousand, three hundred forty".