20814379 has 8 divisors (see below), whose sum is σ = 21853440. Its totient is φ = 19786536.

The previous prime is 20814377. The next prime is 20814397. The reversal of 20814379 is 97341802.

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 20814379 - 2¹ = 20814377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20814371) 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, 1132 + ... + 6550.

It is an arithmetic number, because the mean of its divisors is an integer number (2731680).

Almost surely, 2^20814379 is an apocalyptic number.

20814379 is a deficient number, since it is larger than the sum of its proper divisors (1039061).

20814379 is a wasteful number, since it uses less digits than its factorization.

20814379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 20814379 is about 4562.2778302072. The cubic root of 20814379 is about 275.0771309816.

The spelling of 20814379 in words is "twenty million, eight hundred fourteen thousand, three hundred seventy-nine".