1340723040 has 48 divisors (see below), whose sum is σ = 4223279088. Its totient is φ = 357526016.

The previous prime is 1340723017. The next prime is 1340723057. The reversal of 1340723040 is 403270431.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1340723040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1396107 + ... + 1397066.

It is an arithmetic number, because the mean of its divisors is an integer number (87984981).

Almost surely, 2^1340723040 is an apocalyptic number.

1340723040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340723040 is an abundant number, since it is smaller than the sum of its proper divisors (2882556048).

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

1340723040 is a wasteful number, since it uses less digits than its factorization.

1340723040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793191 (or 2793183 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 1340723040 is about 36615.8850773814. The cubic root of 1340723040 is about 1102.6720274960.

Adding to 1340723040 its reverse (403270431), we get a palindrome (1743993471).

The spelling of 1340723040 in words is "one billion, three hundred forty million, seven hundred twenty-three thousand, forty".