20026140 has 24 divisors (see below), whose sum is σ = 56073360. Its totient is φ = 5340288.

The previous prime is 20026129. The next prime is 20026141. The reversal of 20026140 is 4162002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20026141) 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 7 ways as a sum of consecutive naturals, for example, 166825 + ... + 166944.

It is an arithmetic number, because the mean of its divisors is an integer number (2336390).

Almost surely, 2^20026140 is an apocalyptic number.

20026140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20026140 is an abundant number, since it is smaller than the sum of its proper divisors (36047220).

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

20026140 is a wasteful number, since it uses less digits than its factorization.

20026140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333781 (or 333779 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20026140 is about 4475.0575415295. The cubic root of 20026140 is about 271.5599683032.

Adding to 20026140 its reverse (4162002), we get a palindrome (24188142).

The spelling of 20026140 in words is "twenty million, twenty-six thousand, one hundred forty".