11320815 has 16 divisors (see below), whose sum is σ = 19760256. Its totient is φ = 5488800.

The previous prime is 11320811. The next prime is 11320819. The reversal of 11320815 is 51802311.

It is an interprime number because it is at equal distance from previous prime (11320811) and next prime (11320819).

It is not a de Polignac number, because 11320815 - 2² = 11320811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11320791 and 11320800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11320811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34141 + ... + 34470.

It is an arithmetic number, because the mean of its divisors is an integer number (1235016).

Almost surely, 2^11320815 is an apocalyptic number.

11320815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11320815 is a deficient number, since it is larger than the sum of its proper divisors (8439441).

11320815 is a wasteful number, since it uses less digits than its factorization.

11320815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68630.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 11320815 is about 3364.6418828755. The cubic root of 11320815 is about 224.5394034371.

The spelling of 11320815 in words is "eleven million, three hundred twenty thousand, eight hundred fifteen".