20934367 has 4 divisors (see below), whose sum is σ = 20993040. Its totient is φ = 20875696.

The previous prime is 20934337. The next prime is 20934377. The reversal of 20934367 is 76343902.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20934367 - 2¹⁵ = 20901599 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 (20934337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28798 + ... + 29515.

It is an arithmetic number, because the mean of its divisors is an integer number (5248260).

Almost surely, 2^20934367 is an apocalyptic number.

20934367 is a deficient number, since it is larger than the sum of its proper divisors (58673).

20934367 is an equidigital number, since it uses as much as digits as its factorization.

20934367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58672.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 20934367 is about 4575.4089434716. The cubic root of 20934367 is about 275.6046947127.

The spelling of 20934367 in words is "twenty million, nine hundred thirty-four thousand, three hundred sixty-seven".