1340857532 has 12 divisors (see below), whose sum is σ = 2681715120. Its totient is φ = 574653216.

The previous prime is 1340857513. The next prime is 1340857549. The reversal of 1340857532 is 2357580431.

1340857532 is an admirable number.

It is a super-2 number, since 2×1340857532² = 3595797842242262048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23943857 + ... + 23943912.

It is an arithmetic number, because the mean of its divisors is an integer number (223476260).

Almost surely, 2^1340857532 is an apocalyptic number.

It is an amenable number.

1340857532 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1340857532 is a wasteful number, since it uses less digits than its factorization.

1340857532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47887780 (or 47887778 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 1340857532 is about 36617.7215566452. The cubic root of 1340857532 is about 1102.7088970565.

The spelling of 1340857532 in words is "one billion, three hundred forty million, eight hundred fifty-seven thousand, five hundred thirty-two".