11745729 has 10 divisors (see below), whose sum is σ = 17546210. Its totient is φ = 7830432.

The previous prime is 11745719. The next prime is 11745749. The reversal of 11745729 is 92754711.

It is a happy number.

11745729 is a `hidden beast` number, since 11 + 74 + 572 + 9 = 666.

11745729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7535025 + 4210704 = 2745^2 + 2052^2 .

It is not a de Polignac number, because 11745729 - 2⁵ = 11745697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11745693 and 11745702.

It is not an unprimeable number, because it can be changed into a prime (11745719) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 72424 + ... + 72585.

It is an arithmetic number, because the mean of its divisors is an integer number (1754621).

Almost surely, 2^11745729 is an apocalyptic number.

It is an amenable number.

11745729 is a deficient number, since it is larger than the sum of its proper divisors (5800481).

11745729 is an equidigital number, since it uses as much as digits as its factorization.

11745729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145021 (or 145012 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 11745729 is about 3427.2042541990. The cubic root of 11745729 is about 227.3142484091.

It can be divided in two parts, 1174 and 5729, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 11745729 in words is "eleven million, seven hundred forty-five thousand, seven hundred twenty-nine".