1288888 has 16 divisors (see below), whose sum is σ = 2450880. Its totient is φ = 635328.

The previous prime is 1288877. The next prime is 1288891. The reversal of 1288888 is 8888821.

It is a super-2 number, since 2×1288888² = 3322464553088, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

1288888 is a modest number, since divided by 8888 gives 128 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520 + ... + 1687.

It is an arithmetic number, because the mean of its divisors is an integer number (153180).

2^1288888 is an apocalyptic number.

It is an amenable number.

1288888 is a deficient number, since it is larger than the sum of its proper divisors (1161992).

1288888 is a wasteful number, since it uses less digits than its factorization.

1288888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286 (or 2282 counting only the distinct ones).

The product of its digits is 65536, while the sum is 43.

The square root of 1288888 is about 1135.2920329149. The cubic root of 1288888 is about 108.8274350508.

The spelling of 1288888 in words is "one million, two hundred eighty-eight thousand, eight hundred eighty-eight".