287630582020 has 24 divisors (see below), whose sum is σ = 605042837784. Its totient is φ = 114858210816.

The previous prime is 287630581969. The next prime is 287630582021. The reversal of 287630582020 is 20285036782.

It can be written as a sum of positive squares in 4 ways, for example, as 37086286084 + 250544295936 = 192578^2 + 500544^2 .

It is not an unprimeable number, because it can be changed into a prime (287630582021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12114219 + ... + 12137938.

It is an arithmetic number, because the mean of its divisors is an integer number (25210118241).

Almost surely, 2^287630582020 is an apocalyptic number.

287630582020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

287630582020 is an abundant number, since it is smaller than the sum of its proper divisors (317412255764).

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

287630582020 is a wasteful number, since it uses less digits than its factorization.

287630582020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24252759 (or 24252757 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 287630582020 in words is "two hundred eighty-seven billion, six hundred thirty million, five hundred eighty-two thousand, twenty".