20579379 has 8 divisors (see below), whose sum is σ = 27495120. Its totient is φ = 13691616.

The previous prime is 20579369. The next prime is 20579399. The reversal of 20579379 is 97397502.

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

It is not a de Polignac number, because 20579379 - 2⁵ = 20579347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20579379.

It is not an unprimeable number, because it can be changed into a prime (20579329) 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, 5212 + ... + 8265.

It is an arithmetic number, because the mean of its divisors is an integer number (3436890).

Almost surely, 2^20579379 is an apocalyptic number.

20579379 is a deficient number, since it is larger than the sum of its proper divisors (6915741).

20579379 is a wasteful number, since it uses less digits than its factorization.

20579379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13989.

The product of its (nonzero) digits is 119070, while the sum is 42.

The square root of 20579379 is about 4536.4500438118. The cubic root of 20579379 is about 274.0379784677.

The spelling of 20579379 in words is "twenty million, five hundred seventy-nine thousand, three hundred seventy-nine".