20379673 has 4 divisors (see below), whose sum is σ = 20713828. Its totient is φ = 20045520.

The previous prime is 20379649. The next prime is 20379691. The reversal of 20379673 is 37697302.

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 11923209 + 8456464 = 3453^2 + 2908^2 .

It is a cyclic number.

It is not a de Polignac number, because 20379673 - 2⁵ = 20379641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20379973) 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 3 ways as a sum of consecutive naturals, for example, 166986 + ... + 167107.

It is an arithmetic number, because the mean of its divisors is an integer number (5178457).

Almost surely, 2^20379673 is an apocalyptic number.

It is an amenable number.

20379673 is a deficient number, since it is larger than the sum of its proper divisors (334155).

20379673 is an equidigital number, since it uses as much as digits as its factorization.

20379673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334154.

The product of its (nonzero) digits is 47628, while the sum is 37.

The square root of 20379673 is about 4514.3851187066. The cubic root of 20379673 is about 273.1486575587.

The spelling of 20379673 in words is "twenty million, three hundred seventy-nine thousand, six hundred seventy-three".