1340244636 has 48 divisors (see below), whose sum is σ = 3240301344. Its totient is φ = 430811136.

The previous prime is 1340244601. The next prime is 1340244641. The reversal of 1340244636 is 6364420431.

It is a junction number, because it is equal to n+sod(n) for n = 1340244597 and 1340244606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36816 + ... + 63528.

It is an arithmetic number, because the mean of its divisors is an integer number (67506278).

Almost surely, 2^1340244636 is an apocalyptic number.

It is an amenable number.

1340244636 is an abundant number, since it is smaller than the sum of its proper divisors (1900056708).

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

1340244636 is a wasteful number, since it uses less digits than its factorization.

1340244636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26870 (or 26868 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 33.

The square root of 1340244636 is about 36609.3517560746. The cubic root of 1340244636 is about 1102.5408581070.

The spelling of 1340244636 in words is "one billion, three hundred forty million, two hundred forty-four thousand, six hundred thirty-six".