228502387939680 has 576 divisors, whose sum is σ = 824646841200000. Its totient is φ = 57501098704896.

The previous prime is 228502387939649. The next prime is 228502387939687. The reversal of 228502387939680 is 86939783205822.

228502387939680 is a `hidden beast` number, since 2 + 2 + 8 + 502 + 3 + 8 + 7 + 9 + 39 + 6 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 228502387939599 and 228502387939608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228502387939687) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1323421996 + ... + 1323594644.

It is an arithmetic number, because the mean of its divisors is an integer number (1431678543750).

Almost surely, 2^{228502387939680} is an apocalyptic number.

228502387939680 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 228502387939680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412323420600000).

228502387939680 is an abundant number, since it is smaller than the sum of its proper divisors (596144453260320).

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

228502387939680 is a wasteful number, since it uses less digits than its factorization.

228502387939680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173231 (or 173220 counting only the distinct ones).

The product of its (nonzero) digits is 627056640, while the sum is 72.

The spelling of 228502387939680 in words is "two hundred twenty-eight trillion, five hundred two billion, three hundred eighty-seven million, nine hundred thirty-nine thousand, six hundred eighty".