11720356 has 18 divisors (see below), whose sum is σ = 21200550. Its totient is φ = 5669280.

The previous prime is 11720353. The next prime is 11720389. The reversal of 11720356 is 65302711.

11720356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7784100 + 3936256 = 2790^2 + 1984^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11720356.

It is not an unprimeable number, because it can be changed into a prime (11720353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2320 + ... + 5368.

Almost surely, 2^11720356 is an apocalyptic number.

It is an amenable number.

11720356 is a deficient number, since it is larger than the sum of its proper divisors (9480194).

11720356 is a wasteful number, since it uses less digits than its factorization.

11720356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3115 (or 3082 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 11720356 is about 3423.5005476851. The cubic root of 11720356 is about 227.1504497924.

The spelling of 11720356 in words is "eleven million, seven hundred twenty thousand, three hundred fifty-six".