20758128 has 40 divisors (see below), whose sum is σ = 54389376. Its totient is φ = 6820800.

The previous prime is 20758123. The next prime is 20758151. The reversal of 20758128 is 82185702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20758123) 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, 363 + ... + 6453.

Almost surely, 2^20758128 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 20758128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27194688).

20758128 is an abundant number, since it is smaller than the sum of its proper divisors (33631248).

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

20758128 is a wasteful number, since it uses less digits than its factorization.

20758128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6173 (or 6167 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 20758128 is about 4556.1088661269. The cubic root of 20758128 is about 274.8291081506.

The spelling of 20758128 in words is "twenty million, seven hundred fifty-eight thousand, one hundred twenty-eight".