11944840 has 16 divisors (see below), whose sum is σ = 26875980. Its totient is φ = 4777920.

The previous prime is 11944819. The next prime is 11944847. The reversal of 11944840 is 4844911.

It can be written as a sum of positive squares in 2 ways, for example, as 11655396 + 289444 = 3414^2 + 538^2 .

It is not an unprimeable number, because it can be changed into a prime (11944847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149271 + ... + 149350.

Almost surely, 2^11944840 is an apocalyptic number.

11944840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11944840 is an abundant number, since it is smaller than the sum of its proper divisors (14931140).

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

11944840 is a wasteful number, since it uses less digits than its factorization.

11944840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298632 (or 298628 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 11944840 is about 3456.1307845624. The cubic root of 11944840 is about 228.5915183235.

It can be divided in two parts, 11944 and 840, that multiplied together give a triangular number (10032960 = T₄₄₇₉).

The spelling of 11944840 in words is "eleven million, nine hundred forty-four thousand, eight hundred forty".