1434640 has 40 divisors (see below), whose sum is σ = 3392640. Its totient is φ = 564096.

The previous prime is 1434637. The next prime is 1434661. The reversal of 1434640 is 464341.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6207 + ... + 6433.

It is an arithmetic number, because the mean of its divisors is an integer number (84816).

2^1434640 is an apocalyptic number.

1434640 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 1434640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1696320).

1434640 is an abundant number, since it is smaller than the sum of its proper divisors (1958000).

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

1434640 is a wasteful number, since it uses less digits than its factorization.

1434640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1434640 is about 1197.7645845491. The cubic root of 1434640 is about 112.7840394567.

Adding to 1434640 its reverse (464341), we get a palindrome (1898981).

Subtracting from 1434640 its reverse (464341), we obtain a cube (970299 = 99³).

The spelling of 1434640 in words is "one million, four hundred thirty-four thousand, six hundred forty".