228473409507840 has 800 divisors, whose sum is σ = 943803031311360. Its totient is φ = 51743352324096.

The previous prime is 228473409507839. The next prime is 228473409507883. The reversal of 228473409507840 is 48705904374822.

It is a happy number.

228473409507840 is a `hidden beast` number, since 2 + 2 + 8 + 4 + 7 + 3 + 40 + 9 + 507 + 84 + 0 = 666.

It is a super-2 number, since 2×228473409507840² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 157493649 + ... + 158937711.

Almost surely, 2^{228473409507840} is an apocalyptic number.

228473409507840 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 228473409507840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471901515655680).

228473409507840 is an abundant number, since it is smaller than the sum of its proper divisors (715329621803520).

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

228473409507840 is a wasteful number, since it uses less digits than its factorization.

228473409507840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444214 (or 1444189 counting only the distinct ones).

The product of its (nonzero) digits is 108380160, while the sum is 63.

The spelling of 228473409507840 in words is "two hundred twenty-eight trillion, four hundred seventy-three billion, four hundred nine million, five hundred seven thousand, eight hundred forty".