1024440 has 32 divisors (see below), whose sum is σ = 3073680. Its totient is φ = 273152.

The previous prime is 1024433. The next prime is 1024477. The reversal of 1024440 is 444201.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 7 ways as a sum of consecutive naturals, for example, 4149 + ... + 4388.

2^1024440 is an apocalyptic number.

1024440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1024440 is an abundant number, since it is smaller than the sum of its proper divisors (2049240).

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

1024440 is a wasteful number, since it uses less digits than its factorization.

1024440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8551 (or 8547 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 1024440 is about 1012.1462344938. The cubic root of 1024440 is about 100.8081185197.

Adding to 1024440 its reverse (444201), we get a palindrome (1468641).

The spelling of 1024440 in words is "one million, twenty-four thousand, four hundred forty".