1340534480 has 20 divisors (see below), whose sum is σ = 3116742852. Its totient is φ = 536213760.

The previous prime is 1340534453. The next prime is 1340534491. The reversal of 1340534480 is 844350431.

It can be written as a sum of positive squares in 2 ways, for example, as 138109504 + 1202424976 = 11752^2 + 34676^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8378261 + ... + 8378420.

Almost surely, 2^1340534480 is an apocalyptic number.

1340534480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340534480 is an abundant number, since it is smaller than the sum of its proper divisors (1776208372).

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

1340534480 is a wasteful number, since it uses less digits than its factorization.

1340534480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16756694 (or 16756688 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 1340534480 is about 36613.3101480869. The cubic root of 1340534480 is about 1102.6203316126.

The spelling of 1340534480 in words is "one billion, three hundred forty million, five hundred thirty-four thousand, four hundred eighty".