228408558840 has 864 divisors, whose sum is σ = 958573783440. Its totient is φ = 46991831040.

The previous prime is 228408558761. The next prime is 228408558857. The reversal of 228408558840 is 48855804822.

228408558840 is a `hidden beast` number, since 2 + 2 + 8 + 4 + 0 + 8 + 558 + 84 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 241191247 + ... + 241192193.

Almost surely, 2^228408558840 is an apocalyptic number.

228408558840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228408558840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (479286891720).

228408558840 is an abundant number, since it is smaller than the sum of its proper divisors (730165224600).

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

228408558840 is a wasteful number, since it uses less digits than its factorization.

228408558840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 6553600, while the sum is 54.

The spelling of 228408558840 in words is "two hundred twenty-eight billion, four hundred eight million, five hundred fifty-eight thousand, eight hundred forty".