20376317 has 4 divisors (see below), whose sum is σ = 21943740. Its totient is φ = 18808896.

The previous prime is 20376313. The next prime is 20376329. The reversal of 20376317 is 71367302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2979076 + 17397241 = 1726^2 + 4171^2 .

It is a cyclic number.

It is not a de Polignac number, because 20376317 - 2² = 20376313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20376317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20376311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783692 + ... + 783717.

It is an arithmetic number, because the mean of its divisors is an integer number (5485935).

Almost surely, 2^20376317 is an apocalyptic number.

It is an amenable number.

20376317 is a deficient number, since it is larger than the sum of its proper divisors (1567423).

20376317 is a wasteful number, since it uses less digits than its factorization.

20376317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567422.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 20376317 is about 4514.0134027271. The cubic root of 20376317 is about 273.1336632517.

The spelling of 20376317 in words is "twenty million, three hundred seventy-six thousand, three hundred seventeen".