20293679 has 8 divisors (see below), whose sum is σ = 23230080. Its totient is φ = 17366616.

The previous prime is 20293657. The next prime is 20293687. The reversal of 20293679 is 97639202.

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

It is a cyclic number.

It is not a de Polignac number, because 20293679 - 2¹² = 20289583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20293619) 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 7 ways as a sum of consecutive naturals, for example, 3212 + ... + 7134.

It is an arithmetic number, because the mean of its divisors is an integer number (2903760).

Almost surely, 2^20293679 is an apocalyptic number.

20293679 is a deficient number, since it is larger than the sum of its proper divisors (2936401).

20293679 is an equidigital number, since it uses as much as digits as its factorization.

20293679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4669.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 20293679 is about 4504.8506079558. The cubic root of 20293679 is about 272.7639235222.

The spelling of 20293679 in words is "twenty million, two hundred ninety-three thousand, six hundred seventy-nine".