228563420 has 24 divisors (see below), whose sum is σ = 500853024. Its totient is φ = 87450176.

The previous prime is 228563417. The next prime is 228563437. The reversal of 228563420 is 24365822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247979 + ... + 248898.

It is an arithmetic number, because the mean of its divisors is an integer number (20868876).

Almost surely, 2^228563420 is an apocalyptic number.

228563420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228563420 is an abundant number, since it is smaller than the sum of its proper divisors (272289604).

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

228563420 is a wasteful number, since it uses less digits than its factorization.

228563420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496909 (or 496907 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 228563420 is about 15118.3140594446. The cubic root of 228563420 is about 611.4142764897.

The spelling of 228563420 in words is "two hundred twenty-eight million, five hundred sixty-three thousand, four hundred twenty".