11729440 has 24 divisors (see below), whose sum is σ = 27711180. Its totient is φ = 4691712.

The previous prime is 11729437. The next prime is 11729467. The reversal of 11729440 is 4492711.

It can be written as a sum of positive squares in 2 ways, for example, as 10784656 + 944784 = 3284^2 + 972^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11729399 and 11729408.

It is an unprimeable number.

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, 36495 + ... + 36814.

Almost surely, 2^11729440 is an apocalyptic number.

11729440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11729440 is an abundant number, since it is smaller than the sum of its proper divisors (15981740).

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

11729440 is an equidigital number, since it uses as much as digits as its factorization.

11729440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73324 (or 73316 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 11729440 is about 3424.8270029302. The cubic root of 11729440 is about 227.2091198482.

The spelling of 11729440 in words is "eleven million, seven hundred twenty-nine thousand, four hundred forty".