20103472 has 20 divisors (see below), whose sum is σ = 40644720. Its totient is φ = 9614528.

The previous prime is 20103443. The next prime is 20103487. The reversal of 20103472 is 27430102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26947 + ... + 27682.

It is an arithmetic number, because the mean of its divisors is an integer number (2032236).

Almost surely, 2^20103472 is an apocalyptic number.

It is an amenable number.

20103472 is an abundant number, since it is smaller than the sum of its proper divisors (20541248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20103472 is a wasteful number, since it uses less digits than its factorization.

20103472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54660 (or 54654 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 20103472 is about 4483.6895521434. The cubic root of 20103472 is about 271.9090670659.

Adding to 20103472 its reverse (27430102), we get a palindrome (47533574).

The spelling of 20103472 in words is "twenty million, one hundred three thousand, four hundred seventy-two".