1288828 has 12 divisors (see below), whose sum is σ = 2353680. Its totient is φ = 616352.

The previous prime is 1288823. The next prime is 1288829. The reversal of 1288828 is 8288821.

It is a super-2 number, since 2×1288828² = 3322155227168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6913 + ... + 7096.

It is an arithmetic number, because the mean of its divisors is an integer number (196140).

2^1288828 is an apocalyptic number.

It is an amenable number.

1288828 is a deficient number, since it is larger than the sum of its proper divisors (1064852).

1288828 is a wasteful number, since it uses less digits than its factorization.

1288828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14036 (or 14034 counting only the distinct ones).

The product of its digits is 16384, while the sum is 37.

The square root of 1288828 is about 1135.2656076884. The cubic root of 1288828 is about 108.8257463219.

It can be divided in two parts, 1288 and 828, that added together give a square (2116 = 46²).

The spelling of 1288828 in words is "one million, two hundred eighty-eight thousand, eight hundred twenty-eight".