20789367 has 4 divisors (see below), whose sum is σ = 27719160. Its totient is φ = 13859576.

The previous prime is 20789359. The next prime is 20789371. The reversal of 20789367 is 76398702.

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 20789367 - 2³ = 20789359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20789357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3464892 + ... + 3464897.

It is an arithmetic number, because the mean of its divisors is an integer number (6929790).

Almost surely, 2^20789367 is an apocalyptic number.

20789367 is a deficient number, since it is larger than the sum of its proper divisors (6929793).

20789367 is an equidigital number, since it uses as much as digits as its factorization.

20789367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6929792.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 20789367 is about 4559.5358316390. The cubic root of 20789367 is about 274.9669029039.

The spelling of 20789367 in words is "twenty million, seven hundred eighty-nine thousand, three hundred sixty-seven".