1340370520 has 32 divisors (see below), whose sum is σ = 3057153120. Its totient is φ = 528802560.

The previous prime is 1340370511. The next prime is 1340370533. The reversal of 1340370520 is 250730431.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226596 + ... + 232435.

It is an arithmetic number, because the mean of its divisors is an integer number (95536035).

Almost surely, 2^1340370520 is an apocalyptic number.

1340370520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340370520 is an abundant number, since it is smaller than the sum of its proper divisors (1716782600).

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

1340370520 is a wasteful number, since it uses less digits than its factorization.

1340370520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459115 (or 459111 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 1340370520 is about 36611.0710031815. The cubic root of 1340370520 is about 1102.5753761606.

The spelling of 1340370520 in words is "one billion, three hundred forty million, three hundred seventy thousand, five hundred twenty".