1434305640 has 128 divisors (see below), whose sum is σ = 4568400000. Its totient is φ = 359006208.

The previous prime is 1434305597. The next prime is 1434305641. The reversal of 1434305640 is 465034341.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1434305598 and 1434305607.

It is not an unprimeable number, because it can be changed into a prime (1434305641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1017256 + ... + 1018664.

It is an arithmetic number, because the mean of its divisors is an integer number (35690625).

Almost surely, 2^1434305640 is an apocalyptic number.

1434305640 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 1434305640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2284200000).

1434305640 is an abundant number, since it is smaller than the sum of its proper divisors (3134094360).

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

1434305640 is a wasteful number, since it uses less digits than its factorization.

1434305640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939 (or 1935 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 1434305640 is about 37872.2278193401. The cubic root of 1434305640 is about 1127.7527688638.

Adding to 1434305640 its reverse (465034341), we get a palindrome (1899339981).

The spelling of 1434305640 in words is "one billion, four hundred thirty-four million, three hundred five thousand, six hundred forty".