20244020 has 12 divisors (see below), whose sum is σ = 42512484. Its totient is φ = 8097600.

The previous prime is 20243989. The next prime is 20244041. The reversal of 20244020 is 2044202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10484644 + 9759376 = 3238^2 + 3124^2 .

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20243986 and 20244004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506081 + ... + 506120.

It is an arithmetic number, because the mean of its divisors is an integer number (3542707).

Almost surely, 2^20244020 is an apocalyptic number.

20244020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20244020 is an abundant number, since it is smaller than the sum of its proper divisors (22268464).

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

20244020 is a wasteful number, since it uses less digits than its factorization.

20244020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012210 (or 1012208 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 20244020 is about 4499.3355064943. The cubic root of 20244020 is about 272.5412557126.

Adding to 20244020 its reverse (2044202), we get a palindrome (22288222).

The spelling of 20244020 in words is "twenty million, two hundred forty-four thousand, twenty".