20538048 has 56 divisors (see below), whose sum is σ = 55686960. Its totient is φ = 6676480.

The previous prime is 20538043. The next prime is 20538109. The reversal of 20538048 is 84083502.

It is a super-2 number, since 2×20538048² = 843622831300608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20538043) 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, 6568 + ... + 9176.

It is an arithmetic number, because the mean of its divisors is an integer number (994410).

Almost surely, 2^20538048 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 20538048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27843480).

20538048 is an abundant number, since it is smaller than the sum of its proper divisors (35148912).

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

20538048 is a wasteful number, since it uses less digits than its factorization.

20538048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665 (or 2655 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 20538048 is about 4531.8923199917. The cubic root of 20538048 is about 273.8543989956.

It can be divided in two parts, 2053 and 8048, that added together give a palindrome (10101).

The spelling of 20538048 in words is "twenty million, five hundred thirty-eight thousand, forty-eight".