288328212 has 36 divisors (see below), whose sum is σ = 740783316. Its totient is φ = 94533120.

The previous prime is 288328193. The next prime is 288328219. The reversal of 288328212 is 212823882.

It can be written as a sum of positive squares in 2 ways, for example, as 19236996 + 269091216 = 4386^2 + 16404^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288328219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63453 + ... + 67844.

Almost surely, 2^288328212 is an apocalyptic number.

It is an amenable number.

288328212 is an abundant number, since it is smaller than the sum of its proper divisors (452455104).

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

288328212 is a wasteful number, since it uses less digits than its factorization.

288328212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131368 (or 131363 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 288328212 is about 16980.2300337775. The cubic root of 288328212 is about 660.6362184650.

The spelling of 288328212 in words is "two hundred eighty-eight million, three hundred twenty-eight thousand, two hundred twelve".