228451340 has 24 divisors (see below), whose sum is σ = 516652080. Its totient is φ = 84351168.

The previous prime is 228451339. The next prime is 228451343. The reversal of 228451340 is 43154822.

It is a happy number.

228451340 is digitally balanced in base 2, 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 (228451343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439070 + ... + 439589.

It is an arithmetic number, because the mean of its divisors is an integer number (21527170).

Almost surely, 2^228451340 is an apocalyptic number.

228451340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228451340 is an abundant number, since it is smaller than the sum of its proper divisors (288200740).

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

228451340 is a wasteful number, since it uses less digits than its factorization.

228451340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878681 (or 878679 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 228451340 is about 15114.6068423893. The cubic root of 228451340 is about 611.3143209845.

The spelling of 228451340 in words is "two hundred twenty-eight million, four hundred fifty-one thousand, three hundred forty".