11720044 has 24 divisors (see below), whose sum is σ = 23512608. Its totient is φ = 5007360.

The previous prime is 11720039. The next prime is 11720047. The reversal of 11720044 is 44002711.

It is not an unprimeable number, because it can be changed into a prime (11720047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17622 + ... + 18274.

It is an arithmetic number, because the mean of its divisors is an integer number (979692).

Almost surely, 2^11720044 is an apocalyptic number.

11720044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11720044 is an abundant number, since it is smaller than the sum of its proper divisors (11792564).

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

11720044 is a wasteful number, since it uses less digits than its factorization.

11720044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305 (or 1303 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 11720044 is about 3423.4549799873. The cubic root of 11720044 is about 227.1484341663.

Adding to 11720044 its reverse (44002711), we get a palindrome (55722755).

The spelling of 11720044 in words is "eleven million, seven hundred twenty thousand, forty-four".