36129621 has 32 divisors (see below), whose sum is σ = 57254400. Its totient is φ = 20018880.

The previous prime is 36129617. The next prime is 36129631. The reversal of 36129621 is 12692163.

36129621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 36129621 - 2² = 36129617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36129631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17190 + ... + 19176.

It is an arithmetic number, because the mean of its divisors is an integer number (1789200).

Almost surely, 2^36129621 is an apocalyptic number.

It is an amenable number.

36129621 is a deficient number, since it is larger than the sum of its proper divisors (21124779).

36129621 is a wasteful number, since it uses less digits than its factorization.

36129621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049.

The product of its digits is 3888, while the sum is 30.

The square root of 36129621 is about 6010.7920443150. The cubic root of 36129621 is about 330.5885456810.

The spelling of 36129621 in words is "thirty-six million, one hundred twenty-nine thousand, six hundred twenty-one".