11309816 has 16 divisors (see below), whose sum is σ = 24235440. Its totient is φ = 4847040.

The previous prime is 11309791. The next prime is 11309819. The reversal of 11309816 is 61890311.

It is a happy number.

11309816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×11309816⁴ (a number of 29 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11309819) 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, 100925 + ... + 101036.

It is an arithmetic number, because the mean of its divisors is an integer number (1514715).

Almost surely, 2^11309816 is an apocalyptic number.

It is an amenable number.

11309816 is an abundant number, since it is smaller than the sum of its proper divisors (12925624).

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

11309816 is a wasteful number, since it uses less digits than its factorization.

11309816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201974 (or 201970 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 11309816 is about 3363.0069878012. The cubic root of 11309816 is about 224.4666610546.

The spelling of 11309816 in words is "eleven million, three hundred nine thousand, eight hundred sixteen".