20053072 has 40 divisors (see below), whose sum is σ = 42124040. Its totient is φ = 9192960.

The previous prime is 20053043. The next prime is 20053091. The reversal of 20053072 is 27035002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 197136 + 19855936 = 444^2 + 4456^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47422 + ... + 47842.

It is an arithmetic number, because the mean of its divisors is an integer number (1053101).

Almost surely, 2^20053072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20053072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21062020).

20053072 is an abundant number, since it is smaller than the sum of its proper divisors (22070968).

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

20053072 is a wasteful number, since it uses less digits than its factorization.

20053072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 20053072 is about 4478.0656538287. The cubic root of 20053072 is about 271.6816488825.

Adding to 20053072 its reverse (27035002), we get a palindrome (47088074).

The spelling of 20053072 in words is "twenty million, fifty-three thousand, seventy-two".