11729385 has 24 divisors (see below), whose sum is σ = 20669064. Its totient is φ = 6151680.

The previous prime is 11729383. The next prime is 11729387. The reversal of 11729385 is 58392711.

It is an interprime number because it is at equal distance from previous prime (11729383) and next prime (11729387).

It can be written as a sum of positive squares in 4 ways, for example, as 114921 + 11614464 = 339^2 + 3408^2 .

It is not a de Polignac number, because 11729385 - 2¹ = 11729383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11729383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 609 + ... + 4881.

It is an arithmetic number, because the mean of its divisors is an integer number (861211).

Almost surely, 2^11729385 is an apocalyptic number.

11729385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11729385 is a deficient number, since it is larger than the sum of its proper divisors (8939679).

11729385 is a wasteful number, since it uses less digits than its factorization.

11729385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4345 (or 4342 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 11729385 is about 3424.8189733182. The cubic root of 11729385 is about 227.2087647155.

The spelling of 11729385 in words is "eleven million, seven hundred twenty-nine thousand, three hundred eighty-five".