228420460 has 48 divisors (see below), whose sum is σ = 493317216. Its totient is φ = 88804352.

The previous prime is 228420457. The next prime is 228420581. The reversal of 228420460 is 64024822.

It is a super-2 number, since 2×228420460² = 104351813093223200, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 118827 + ... + 120733.

It is an arithmetic number, because the mean of its divisors is an integer number (10277442).

Almost surely, 2^228420460 is an apocalyptic number.

228420460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228420460 is an abundant number, since it is smaller than the sum of its proper divisors (264896756).

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

228420460 is a wasteful number, since it uses less digits than its factorization.

228420460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082 (or 2080 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 228420460 is about 15113.5852794762. The cubic root of 228420460 is about 611.2867757505.

The spelling of 228420460 in words is "two hundred twenty-eight million, four hundred twenty thousand, four hundred sixty".