11365988 has 6 divisors (see below), whose sum is σ = 19890486. Its totient is φ = 5682992.

The previous prime is 11365987. The next prime is 11365997. The reversal of 11365988 is 88956311.

It can be written as a sum of positive squares in only one way, i.e., 7171684 + 4194304 = 2678^2 + 2048^2 .

It is a super-2 number, since 2×11365988² = 258371366432288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11365987) 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 as a sum of consecutive naturals, namely, 1420745 + ... + 1420752.

It is an arithmetic number, because the mean of its divisors is an integer number (3315081).

Almost surely, 2^11365988 is an apocalyptic number.

It is an amenable number.

11365988 is a deficient number, since it is larger than the sum of its proper divisors (8524498).

11365988 is a wasteful number, since it uses less digits than its factorization.

11365988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2841501 (or 2841499 counting only the distinct ones).

The product of its digits is 51840, while the sum is 41.

The square root of 11365988 is about 3371.3480983132. The cubic root of 11365988 is about 224.8376639737.

The spelling of 11365988 in words is "eleven million, three hundred sixty-five thousand, nine hundred eighty-eight".