1288924 has 24 divisors (see below), whose sum is σ = 2776928. Its totient is φ = 509760.

The previous prime is 1288921. The next prime is 1288933. The reversal of 1288924 is 4298821.

It is a super-2 number, since 2×1288924² = 3322650155552, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1288924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1407 + ... + 2134.

2^1288924 is an apocalyptic number.

1288924 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1288924 is an abundant number, since it is smaller than the sum of its proper divisors (1488004).

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

1288924 is a wasteful number, since it uses less digits than its factorization.

1288924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3565 (or 3563 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 1288924 is about 1135.3078877556. The cubic root of 1288924 is about 108.8284482630.

The spelling of 1288924 in words is "one million, two hundred eighty-eight thousand, nine hundred twenty-four".