228589340 has 24 divisors (see below), whose sum is σ = 548614752. Its totient is φ = 78373440.

The previous prime is 228589279. The next prime is 228589409. The reversal of 228589340 is 43985822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816251 + ... + 816530.

It is an arithmetic number, because the mean of its divisors is an integer number (22858948).

Almost surely, 2^228589340 is an apocalyptic number.

228589340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228589340 is an abundant number, since it is smaller than the sum of its proper divisors (320025412).

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

228589340 is a wasteful number, since it uses less digits than its factorization.

228589340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632797 (or 1632795 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 228589340 is about 15119.1712735851. The cubic root of 228589340 is about 611.4373878855.

The spelling of 228589340 in words is "two hundred twenty-eight million, five hundred eighty-nine thousand, three hundred forty".