20203485 has 8 divisors (see below), whose sum is σ = 32325600. Its totient is φ = 10775184.

The previous prime is 20203481. The next prime is 20203489. The reversal of 20203485 is 58430202.

It is an interprime number because it is at equal distance from previous prime (20203481) and next prime (20203489).

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

It is not a de Polignac number, because 20203485 - 2² = 20203481 is a prime.

It is a super-2 number, since 2×20203485² = 816361612290450, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673435 + ... + 673464.

It is an arithmetic number, because the mean of its divisors is an integer number (4040700).

Almost surely, 2^20203485 is an apocalyptic number.

It is an amenable number.

20203485 is a deficient number, since it is larger than the sum of its proper divisors (12122115).

20203485 is a wasteful number, since it uses less digits than its factorization.

20203485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346907.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 20203485 is about 4494.8286952897. The cubic root of 20203485 is about 272.3592292585.

Adding to 20203485 its reverse (58430202), we get a palindrome (78633687).

The spelling of 20203485 in words is "twenty million, two hundred three thousand, four hundred eighty-five".