228865825420 has 24 divisors (see below), whose sum is σ = 480631710384. Its totient is φ = 91543763136.

The previous prime is 228865825393. The next prime is 228865825469. The reversal of 228865825420 is 24528568822.

It is a happy 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, 677334 + ... + 957346.

It is an arithmetic number, because the mean of its divisors is an integer number (20026321266).

Almost surely, 2^228865825420 is an apocalyptic number.

228865825420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228865825420 is an abundant number, since it is smaller than the sum of its proper divisors (251765884964).

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

228865825420 is a wasteful number, since it uses less digits than its factorization.

228865825420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320889 (or 320887 counting only the distinct ones).

The product of its (nonzero) digits is 4915200, while the sum is 52.

The spelling of 228865825420 in words is "two hundred twenty-eight billion, eight hundred sixty-five million, eight hundred twenty-five thousand, four hundred twenty".