20062840 has 64 divisors (see below), whose sum is σ = 52300800. Its totient is φ = 6784128.

The previous prime is 20062829. The next prime is 20062849. The reversal of 20062840 is 4826002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20062849) 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, 21667 + ... + 22573.

It is an arithmetic number, because the mean of its divisors is an integer number (817200).

Almost surely, 2^20062840 is an apocalyptic number.

20062840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20062840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26150400).

20062840 is an abundant number, since it is smaller than the sum of its proper divisors (32237960).

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

20062840 is a wasteful number, since it uses less digits than its factorization.

20062840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 20062840 is about 4479.1561705303. The cubic root of 20062840 is about 271.7257544368.

Adding to 20062840 its reverse (4826002), we get a palindrome (24888842).

It can be divided in two parts, 20062 and 840, that added together give a palindrome (20902).

The spelling of 20062840 in words is "twenty million, sixty-two thousand, eight hundred forty".