287980900 has 27 divisors (see below), whose sum is σ = 625287019. Its totient is φ = 115124480.

The previous prime is 287980873. The next prime is 287980937. The reversal of 287980900 is 9089782.

The square root of 287980900 is 16970.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 54257956 + 233722944 = 7366^2 + 15288^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 168852 + ... + 170548.

Almost surely, 2^287980900 is an apocalyptic number.

287980900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

287980900 is the 16970-th square number.

It is an amenable number.

287980900 is an abundant number, since it is smaller than the sum of its proper divisors (337306119).

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

287980900 is an equidigital number, since it uses as much as digits as its factorization.

287980900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408 (or 1704 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The cubic root of 287980900 is about 660.3708506575.

The spelling of 287980900 in words is "two hundred eighty-seven million, nine hundred eighty thousand, nine hundred".