228586720 has 48 divisors (see below), whose sum is σ = 568466640. Its totient is φ = 86621184.

The previous prime is 228586661. The next prime is 228586727. The reversal of 228586720 is 27685822.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228586727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34557 + ... + 40636.

It is an arithmetic number, because the mean of its divisors is an integer number (11843055).

Almost surely, 2^228586720 is an apocalyptic number.

228586720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228586720 is an abundant number, since it is smaller than the sum of its proper divisors (339879920).

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

228586720 is a wasteful number, since it uses less digits than its factorization.

228586720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75227 (or 75219 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 228586720 is about 15119.0846283762. The cubic root of 228586720 is about 611.4350518593.

The spelling of 228586720 in words is "two hundred twenty-eight million, five hundred eighty-six thousand, seven hundred twenty".