36129385 has 8 divisors (see below), whose sum is σ = 44066376. Its totient is φ = 28429440.

The previous prime is 36129383. The next prime is 36129397. The reversal of 36129385 is 58392163.

It can be written as a sum of positive squares in 4 ways, for example, as 4981824 + 31147561 = 2232^2 + 5581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 36129385 - 2¹ = 36129383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36129383) 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, 58924 + ... + 59533.

It is an arithmetic number, because the mean of its divisors is an integer number (5508297).

Almost surely, 2^36129385 is an apocalyptic number.

It is an amenable number.

36129385 is a deficient number, since it is larger than the sum of its proper divisors (7936991).

36129385 is a wasteful number, since it uses less digits than its factorization.

36129385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118523.

The product of its digits is 38880, while the sum is 37.

The square root of 36129385 is about 6010.7724129266. The cubic root of 36129385 is about 330.5878258739.

The spelling of 36129385 in words is "thirty-six million, one hundred twenty-nine thousand, three hundred eighty-five".