11720118 has 32 divisors (see below), whose sum is σ = 24444000. Its totient is φ = 3741696.

The previous prime is 11720117. The next prime is 11720119. The reversal of 11720118 is 81102711.

It is an interprime number because it is at equal distance from previous prime (11720117) and next prime (11720119).

It is a super-2 number, since 2×11720118² = 274722331867848, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11720094 and 11720103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11720117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33408 + ... + 33756.

It is an arithmetic number, because the mean of its divisors is an integer number (763875).

Almost surely, 2^11720118 is an apocalyptic number.

11720118 is an abundant number, since it is smaller than the sum of its proper divisors (12723882).

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

11720118 is a wasteful number, since it uses less digits than its factorization.

11720118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576.

The product of its (nonzero) digits is 112, while the sum is 21.

The square root of 11720118 is about 3423.4657877654. The cubic root of 11720118 is about 227.1489122347.

Adding to 11720118 its reverse (81102711), we get a palindrome (92822829).

The spelling of 11720118 in words is "eleven million, seven hundred twenty thousand, one hundred eighteen".