228587339520 has 720 divisors, whose sum is σ = 844376007552. Its totient is φ = 59256852480.

The previous prime is 228587339509. The next prime is 228587339521. The reversal of 228587339520 is 25933785822.

It is a happy number.

228587339520 is a `hidden beast` number, since 2 + 2 + 8 + 5 + 87 + 3 + 39 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228587339521) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1083352215 + ... + 1083352425.

Almost surely, 2^228587339520 is an apocalyptic number.

228587339520 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 228587339520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422188003776).

228587339520 is an abundant number, since it is smaller than the sum of its proper divisors (615788668032).

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

228587339520 is an frugal number, since it uses more digits than its factorization.

228587339520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 228587339520 in words is "two hundred twenty-eight billion, five hundred eighty-seven million, three hundred thirty-nine thousand, five hundred twenty".