20028365 has 8 divisors (see below), whose sum is σ = 27467520. Its totient is φ = 13733712.

The previous prime is 20028347. The next prime is 20028389. The reversal of 20028365 is 56382002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20028365 - 2⁶ = 20028301 is a prime.

It is a super-2 number, since 2×20028365² = 802270809146450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286085 + ... + 286154.

It is an arithmetic number, because the mean of its divisors is an integer number (3433440).

Almost surely, 2^20028365 is an apocalyptic number.

It is an amenable number.

20028365 is a deficient number, since it is larger than the sum of its proper divisors (7439155).

20028365 is an equidigital number, since it uses as much as digits as its factorization.

20028365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572251.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20028365 is about 4475.3061347801. The cubic root of 20028365 is about 271.5700251349.

The spelling of 20028365 in words is "twenty million, twenty-eight thousand, three hundred sixty-five".