228178045020 has 24 divisors (see below), whose sum is σ = 638898526224. Its totient is φ = 60847478656.

The previous prime is 228178044971. The next prime is 228178045061. The reversal of 228178045020 is 20540871822.

It is a self number, because there is not a number n which added to its sum of digits gives 228178045020.

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, 1901483649 + ... + 1901483768.

It is an arithmetic number, because the mean of its divisors is an integer number (26620771926).

Almost surely, 2^228178045020 is an apocalyptic number.

228178045020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228178045020 is an abundant number, since it is smaller than the sum of its proper divisors (410720481204).

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

228178045020 is a wasteful number, since it uses less digits than its factorization.

228178045020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3802967429 (or 3802967427 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 39.

The spelling of 228178045020 in words is "two hundred twenty-eight billion, one hundred seventy-eight million, forty-five thousand, twenty".