228740556 has 24 divisors (see below), whose sum is σ = 582249024. Its totient is φ = 69315280.

The previous prime is 228740539. The next prime is 228740557. The reversal of 228740556 is 655047822.

228740556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×228740556³ (a number of 26 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (228740557) 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, 866310 + ... + 866573.

It is an arithmetic number, because the mean of its divisors is an integer number (24260376).

Almost surely, 2^228740556 is an apocalyptic number.

It is an amenable number.

228740556 is an abundant number, since it is smaller than the sum of its proper divisors (353508468).

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

228740556 is a wasteful number, since it uses less digits than its factorization.

228740556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732901 (or 1732899 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 228740556 is about 15124.1712500223. The cubic root of 228740556 is about 611.5721838122.

The spelling of 228740556 in words is "two hundred twenty-eight million, seven hundred forty thousand, five hundred fifty-six".