228840460 has 24 divisors (see below), whose sum is σ = 485523360. Its totient is φ = 90591744.

The previous prime is 228840439. The next prime is 228840487. The reversal of 228840460 is 64048822.

It is a super-2 number, since 2×228840460² = 104735912266023200, which contains 22 as substring.

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, 57040 + ... + 60919.

It is an arithmetic number, because the mean of its divisors is an integer number (20230140).

Almost surely, 2^228840460 is an apocalyptic number.

228840460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228840460 is an abundant number, since it is smaller than the sum of its proper divisors (256682900).

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

228840460 is a wasteful number, since it uses less digits than its factorization.

228840460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118065 (or 118063 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 228840460 is about 15127.4736820131. The cubic root of 228840460 is about 611.6612069623.

The spelling of 228840460 in words is "two hundred twenty-eight million, eight hundred forty thousand, four hundred sixty".