20028367 has 4 divisors (see below), whose sum is σ = 20215656. Its totient is φ = 19841080.

The previous prime is 20028347. The next prime is 20028389. The reversal of 20028367 is 76382002.

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 20028367 - 2¹¹ = 20026319 is a prime.

It is a super-2 number, since 2×20028367² = 802270969373378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20028347) 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, 93484 + ... + 93697.

It is an arithmetic number, because the mean of its divisors is an integer number (5053914).

Almost surely, 2^20028367 is an apocalyptic number.

20028367 is a deficient number, since it is larger than the sum of its proper divisors (187289).

20028367 is a wasteful number, since it uses less digits than its factorization.

20028367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187288.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20028367 is about 4475.3063582285. The cubic root of 20028367 is about 271.5700341744.

The spelling of 20028367 in words is "twenty million, twenty-eight thousand, three hundred sixty-seven".