1340404530 has 32 divisors (see below), whose sum is σ = 3225268800. Its totient is φ = 356519232.

The previous prime is 1340404529. The next prime is 1340404537. The reversal of 1340404530 is 354040431.

It is a self number, because there is not a number n which added to its sum of digits gives 1340404530.

It is not an unprimeable number, because it can be changed into a prime (1340404537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45760 + ... + 69099.

It is an arithmetic number, because the mean of its divisors is an integer number (100789650).

Almost surely, 2^1340404530 is an apocalyptic number.

1340404530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1340404530 is an abundant number, since it is smaller than the sum of its proper divisors (1884864270).

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

1340404530 is a wasteful number, since it uses less digits than its factorization.

1340404530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115258.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 1340404530 is about 36611.5354772236. The cubic root of 1340404530 is about 1102.5847015102.

Adding to 1340404530 its reverse (354040431), we get a palindrome (1694444961).

The spelling of 1340404530 in words is "one billion, three hundred forty million, four hundred four thousand, five hundred thirty".