228540740 has 24 divisors (see below), whose sum is σ = 505196160. Its totient is φ = 86604768.

The previous prime is 228540737. The next prime is 228540761. The reversal of 228540740 is 47045822.

It is a junction number, because it is equal to n+sod(n) for n = 228540697 and 228540706.

It is an unprimeable number.

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, 300332 + ... + 301091.

It is an arithmetic number, because the mean of its divisors is an integer number (21049840).

Almost surely, 2^228540740 is an apocalyptic number.

228540740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228540740 is an abundant number, since it is smaller than the sum of its proper divisors (276655420).

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

228540740 is a wasteful number, since it uses less digits than its factorization.

228540740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601451 (or 601449 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 228540740 is about 15117.5639571989. The cubic root of 228540740 is about 611.3940525850.

The spelling of 228540740 in words is "two hundred twenty-eight million, five hundred forty thousand, seven hundred forty".