20601329 has 16 divisors (see below), whose sum is σ = 24514560. Its totient is φ = 16940880.

The previous prime is 20601323. The next prime is 20601367. The reversal of 20601329 is 92310602.

It is not a de Polignac number, because 20601329 - 2²⁴ = 3824113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20601323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29822 + ... + 30504.

It is an arithmetic number, because the mean of its divisors is an integer number (1532160).

Almost surely, 2^20601329 is an apocalyptic number.

It is an amenable number.

20601329 is a deficient number, since it is larger than the sum of its proper divisors (3913231).

20601329 is a wasteful number, since it uses less digits than its factorization.

20601329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 20601329 is about 4538.8686916455. The cubic root of 20601329 is about 274.1353736371.

The spelling of 20601329 in words is "twenty million, six hundred one thousand, three hundred twenty-nine".