20834377 has 4 divisors (see below), whose sum is σ = 20861316. Its totient is φ = 20807440.

The previous prime is 20834327. The next prime is 20834399. The reversal of 20834377 is 77343802.

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 12418576 + 8415801 = 3524^2 + 2901^2 .

It is a cyclic number.

It is not a de Polignac number, because 20834377 - 2⁷ = 20834249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20834327) 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, 12274 + ... + 13867.

It is an arithmetic number, because the mean of its divisors is an integer number (5215329).

Almost surely, 2^20834377 is an apocalyptic number.

It is an amenable number.

20834377 is a deficient number, since it is larger than the sum of its proper divisors (26939).

20834377 is an equidigital number, since it uses as much as digits as its factorization.

20834377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26938.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 20834377 is about 4564.4689723997. The cubic root of 20834377 is about 275.1651988130.

The spelling of 20834377 in words is "twenty million, eight hundred thirty-four thousand, three hundred seventy-seven".