20380435 has 4 divisors (see below), whose sum is σ = 24456528. Its totient is φ = 16304344.

The previous prime is 20380427. The next prime is 20380439. The reversal of 20380435 is 53408302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53408302 = 2 ⋅26704151.

It is a cyclic number.

It is not a de Polignac number, because 20380435 - 2³ = 20380427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20380439) 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, 2038039 + ... + 2038048.

It is an arithmetic number, because the mean of its divisors is an integer number (6114132).

Almost surely, 2^20380435 is an apocalyptic number.

20380435 is a deficient number, since it is larger than the sum of its proper divisors (4076093).

20380435 is an equidigital number, since it uses as much as digits as its factorization.

20380435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4076092.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 20380435 is about 4514.4695147935. The cubic root of 20380435 is about 273.1520618770.

Adding to 20380435 its reverse (53408302), we get a palindrome (73788737).

The spelling of 20380435 in words is "twenty million, three hundred eighty thousand, four hundred thirty-five".