20103485 has 8 divisors (see below), whose sum is σ = 24226560. Its totient is φ = 16014544.

The previous prime is 20103443. The next prime is 20103487. The reversal of 20103485 is 58430102.

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 20103485 - 2¹⁰ = 20102461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20103485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103487) 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, 7217 + ... + 9606.

It is an arithmetic number, because the mean of its divisors is an integer number (3028320).

Almost surely, 2^20103485 is an apocalyptic number.

It is an amenable number.

20103485 is a deficient number, since it is larger than the sum of its proper divisors (4123075).

20103485 is a wasteful number, since it uses less digits than its factorization.

20103485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17067.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 20103485 is about 4483.6910018421. The cubic root of 20103485 is about 271.9091256763.

Adding to 20103485 its reverse (58430102), we get a palindrome (78533587).

The spelling of 20103485 in words is "twenty million, one hundred three thousand, four hundred eighty-five".