1340357760 has 384 divisors, whose sum is σ = 5525625600. Its totient is φ = 306173952.

The previous prime is 1340357743. The next prime is 1340357761. The reversal of 1340357760 is 677530431.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1340357761) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 845929 + ... + 847511.

It is an arithmetic number, because the mean of its divisors is an integer number (14389650).

Almost surely, 2^1340357760 is an apocalyptic number.

1340357760 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 1340357760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2762812800).

1340357760 is an abundant number, since it is smaller than the sum of its proper divisors (4185267840).

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

1340357760 is a wasteful number, since it uses less digits than its factorization.

1340357760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625 (or 1600 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 1340357760 is about 36610.8967385395. The cubic root of 1340357760 is about 1102.5718774000.

The spelling of 1340357760 in words is "one billion, three hundred forty million, three hundred fifty-seven thousand, seven hundred sixty".