20463879 has 16 divisors (see below), whose sum is σ = 28919520. Its totient is φ = 12848640.

The previous prime is 20463811. The next prime is 20463889. The reversal of 20463879 is 97836402.

It is not a de Polignac number, because 20463879 - 2⁹ = 20463367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20463889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699 + ... + 6435.

It is an arithmetic number, because the mean of its divisors is an integer number (1807470).

Almost surely, 2^20463879 is an apocalyptic number.

20463879 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20463879 is a deficient number, since it is larger than the sum of its proper divisors (8455641).

20463879 is a wasteful number, since it uses less digits than its factorization.

20463879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5810.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 20463879 is about 4523.7019132564. The cubic root of 20463879 is about 273.5243448056.

The spelling of 20463879 in words is "twenty million, four hundred sixty-three thousand, eight hundred seventy-nine".