1340626740 has 24 divisors (see below), whose sum is σ = 3753755040. Its totient is φ = 357500448.

The previous prime is 1340626739. The next prime is 1340626747. The reversal of 1340626740 is 476260431.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340626747) by changing a digit.

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, 11171830 + ... + 11171949.

It is an arithmetic number, because the mean of its divisors is an integer number (156406460).

Almost surely, 2^1340626740 is an apocalyptic number.

1340626740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340626740 is an abundant number, since it is smaller than the sum of its proper divisors (2413128300).

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

1340626740 is a wasteful number, since it uses less digits than its factorization.

1340626740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22343791 (or 22343789 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 1340626740 is about 36614.5700507325. The cubic root of 1340626740 is about 1102.6456263538.

The spelling of 1340626740 in words is "one billion, three hundred forty million, six hundred twenty-six thousand, seven hundred forty".