228357340 has 48 divisors (see below), whose sum is σ = 513963072. Its totient is φ = 85003776.

The previous prime is 228357323. The next prime is 228357403. The reversal of 228357340 is 43753822.

It is a junction number, because it is equal to n+sod(n) for n = 228357296 and 228357305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10312 + ... + 23728.

It is an arithmetic number, because the mean of its divisors is an integer number (10707564).

Almost surely, 2^228357340 is an apocalyptic number.

228357340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228357340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256981536).

228357340 is an abundant number, since it is smaller than the sum of its proper divisors (285605732).

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

228357340 is a wasteful number, since it uses less digits than its factorization.

228357340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13486 (or 13484 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 228357340 is about 15111.4969476885. The cubic root of 228357340 is about 611.2304644261.

The spelling of 228357340 in words is "two hundred twenty-eight million, three hundred fifty-seven thousand, three hundred forty".