20103072 has 48 divisors (see below), whose sum is σ = 57570912. Its totient is φ = 6091520.

The previous prime is 20103071. The next prime is 20103091. The reversal of 20103072 is 27030102.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (20103071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8463 + ... + 10574.

It is an arithmetic number, because the mean of its divisors is an integer number (1199394).

Almost surely, 2^20103072 is an apocalyptic number.

20103072 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20103072 is an abundant number, since it is smaller than the sum of its proper divisors (37467840).

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

20103072 is a wasteful number, since it uses less digits than its factorization.

20103072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19061 (or 19053 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 20103072 is about 4483.6449458002. The cubic root of 20103072 is about 271.9072636569.

Adding to 20103072 its reverse (27030102), we get a palindrome (47133174).

It can be divided in two parts, 201030 and 72, that added together give a palindrome (201102).

The spelling of 20103072 in words is "twenty million, one hundred three thousand, seventy-two".