11689240 has 16 divisors (see below), whose sum is σ = 26300880. Its totient is φ = 4675680.

The previous prime is 11689231. The next prime is 11689243. The reversal of 11689240 is 4298611.

It is a happy number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11689243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146076 + ... + 146155.

It is an arithmetic number, because the mean of its divisors is an integer number (1643805).

Almost surely, 2^11689240 is an apocalyptic number.

11689240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11689240 is an abundant number, since it is smaller than the sum of its proper divisors (14611640).

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

11689240 is a wasteful number, since it uses less digits than its factorization.

11689240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292242 (or 292238 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 11689240 is about 3418.9530561270. The cubic root of 11689240 is about 226.9492534716.

The spelling of 11689240 in words is "eleven million, six hundred eighty-nine thousand, two hundred forty".