287306828480000 has 200 divisors, whose sum is σ = 819812597830512. Its totient is φ = 98505197568000.

The previous prime is 287306828479999. The next prime is 287306828480011. The reversal of 287306828480000 is 84828603782.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×287306828480000² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 61890989 + ... + 66370988.

Almost surely, 2^{287306828480000} is an apocalyptic number.

287306828480000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

287306828480000 is an abundant number, since it is smaller than the sum of its proper divisors (532505769350512).

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

287306828480000 is an frugal number, since it uses more digits than its factorization.

287306828480000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128262022 (or 128261991 counting only the distinct ones).

The product of its (nonzero) digits is 8257536, while the sum is 56.

The spelling of 287306828480000 in words is "two hundred eighty-seven trillion, three hundred six billion, eight hundred twenty-eight million, four hundred eighty thousand".