20038872 has 64 divisors (see below), whose sum is σ = 57657600. Its totient is φ = 5685120.

The previous prime is 20038849. The next prime is 20038877. The reversal of 20038872 is 27883002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20038877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30079 + ... + 30737.

It is an arithmetic number, because the mean of its divisors is an integer number (900900).

Almost surely, 2^20038872 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 20038872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28828800).

20038872 is an abundant number, since it is smaller than the sum of its proper divisors (37618728).

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

20038872 is a wasteful number, since it uses less digits than its factorization.

20038872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 852 counting only the distinct ones).

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

The square root of 20038872 is about 4476.4798670384. The cubic root of 20038872 is about 271.6175059191.

It can be divided in two parts, 20038 and 872, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 20038872 in words is "twenty million, thirty-eight thousand, eight hundred seventy-two".