20738028 has 48 divisors (see below), whose sum is σ = 52133760. Its totient is φ = 6392064.

The previous prime is 20738021. The next prime is 20738033. The reversal of 20738028 is 82083702.

It is a junction number, because it is equal to n+sod(n) for n = 20737986 and 20738004.

It is not an unprimeable number, because it can be changed into a prime (20738021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11175 + ... + 12897.

It is an arithmetic number, because the mean of its divisors is an integer number (1086120).

Almost surely, 2^20738028 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 20738028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26066880).

20738028 is an abundant number, since it is smaller than the sum of its proper divisors (31395732).

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

20738028 is a wasteful number, since it uses less digits than its factorization.

20738028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806 (or 1804 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 20738028 is about 4553.9025022501. The cubic root of 20738028 is about 274.7403742499.

It can be divided in two parts, 2073 and 8028, that added together give a palindrome (10101).

The spelling of 20738028 in words is "twenty million, seven hundred thirty-eight thousand, twenty-eight".