1985288 has 8 divisors (see below), whose sum is σ = 3722430. Its totient is φ = 992640.

The previous prime is 1985287. The next prime is 1985293. The reversal of 1985288 is 8825891.

It can be written as a sum of positive squares in only one way, i.e., 1214404 + 770884 = 1102^2 + 878^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124073 + ... + 124088.

2^1985288 is an apocalyptic number.

It is an amenable number.

1985288 is a deficient number, since it is larger than the sum of its proper divisors (1737142).

1985288 is a wasteful number, since it uses less digits than its factorization.

1985288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248167 (or 248163 counting only the distinct ones).

The product of its digits is 46080, while the sum is 41.

The square root of 1985288 is about 1409.0024840290. The cubic root of 1985288 is about 125.6824117343.

The spelling of 1985288 in words is "one million, nine hundred eighty-five thousand, two hundred eighty-eight".