1434440 has 64 divisors (see below), whose sum is σ = 3801600. Its totient is φ = 476928.

The previous prime is 1434439. The next prime is 1434451. The reversal of 1434440 is 444341.

It is a super-2 number, since 2×1434440² = 4115236227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13106 + ... + 13214.

It is an arithmetic number, because the mean of its divisors is an integer number (59400).

2^1434440 is an apocalyptic number.

1434440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1434440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1900800).

1434440 is an abundant number, since it is smaller than the sum of its proper divisors (2367160).

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

1434440 is a wasteful number, since it uses less digits than its factorization.

1434440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1434440 is about 1197.6810927789. The cubic root of 1434440 is about 112.7787982216.

Adding to 1434440 its reverse (444341), we get a palindrome (1878781).

Subtracting from 1434440 its reverse (444341), we obtain a palindrome (990099).

The spelling of 1434440 in words is "one million, four hundred thirty-four thousand, four hundred forty".