1340847040 has 56 divisors (see below), whose sum is σ = 3438509760. Its totient is φ = 495080448.

The previous prime is 1340847037. The next prime is 1340847047. The reversal of 1340847040 is 407480431.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1340846993 and 1340847011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340847047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157000 + ... + 165319.

It is an arithmetic number, because the mean of its divisors is an integer number (61401960).

Almost surely, 2^1340847040 is an apocalyptic number.

1340847040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340847040 is an abundant number, since it is smaller than the sum of its proper divisors (2097662720).

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

1340847040 is a wasteful number, since it uses less digits than its factorization.

1340847040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322349 (or 322339 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 1340847040 is about 36617.5782923994. The cubic root of 1340847040 is about 1102.7060208742.

The spelling of 1340847040 in words is "one billion, three hundred forty million, eight hundred forty-seven thousand, forty".