228140346 has 64 divisors (see below), whose sum is σ = 542638080. Its totient is φ = 62570880.

The previous prime is 228140309. The next prime is 228140351. The reversal of 228140346 is 643041822.

228140346 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177735 + ... + 179013.

It is an arithmetic number, because the mean of its divisors is an integer number (8478720).

Almost surely, 2^228140346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228140346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271319040).

228140346 is an abundant number, since it is smaller than the sum of its proper divisors (314497734).

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

228140346 is a wasteful number, since it uses less digits than its factorization.

228140346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 228140346 is about 15104.3154760486. The cubic root of 228140346 is about 611.0367981066.

The spelling of 228140346 in words is "two hundred twenty-eight million, one hundred forty thousand, three hundred forty-six".