11521740 has 24 divisors (see below), whose sum is σ = 32261040. Its totient is φ = 3072448.

The previous prime is 11521717. The next prime is 11521747. The reversal of 11521740 is 4712511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11521747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95955 + ... + 96074.

It is an arithmetic number, because the mean of its divisors is an integer number (1344210).

Almost surely, 2^11521740 is an apocalyptic number.

11521740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11521740 is an abundant number, since it is smaller than the sum of its proper divisors (20739300).

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

11521740 is a wasteful number, since it uses less digits than its factorization.

11521740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192041 (or 192039 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 11521740 is about 3394.3688662254. The cubic root of 11521740 is about 225.8600172110.

The spelling of 11521740 in words is "eleven million, five hundred twenty-one thousand, seven hundred forty".