1288382 has 4 divisors (see below), whose sum is σ = 1932576. Its totient is φ = 644190.

The previous prime is 1288367. The next prime is 1288393. The reversal of 1288382 is 2838821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2838821 = 23 ⋅123427.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322094 + ... + 322097.

It is an arithmetic number, because the mean of its divisors is an integer number (483144).

2^1288382 is an apocalyptic number.

1288382 is a deficient number, since it is larger than the sum of its proper divisors (644194).

1288382 is an equidigital number, since it uses as much as digits as its factorization.

1288382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644193.

The product of its digits is 6144, while the sum is 32.

The square root of 1288382 is about 1135.0691608884. The cubic root of 1288382 is about 108.8131917936.

The spelling of 1288382 in words is "one million, two hundred eighty-eight thousand, three hundred eighty-two".