244020420 has 144 divisors (see below), whose sum is σ = 890547840. Its totient is φ = 52835328.

The previous prime is 244020419. The next prime is 244020421. The reversal of 244020420 is 24020442.

244020420 is a `hidden beast` number, since 2 + 440 + 204 + 20 = 666.

244020420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (244020419) and next prime (244020421).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 244020393 and 244020402.

It is not an unprimeable number, because it can be changed into a prime (244020421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18844 + ... + 29036.

It is an arithmetic number, because the mean of its divisors is an integer number (6184360).

Almost surely, 2^244020420 is an apocalyptic number.

244020420 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 244020420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (445273920).

244020420 is an abundant number, since it is smaller than the sum of its proper divisors (646527420).

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

244020420 is a wasteful number, since it uses less digits than its factorization.

244020420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10234 (or 10229 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 244020420 is about 15621.1529664106. The cubic root of 244020420 is about 624.8974082275.

Adding to 244020420 its reverse (24020442), we get a palindrome (268040862).

The spelling of 244020420 in words is "two hundred forty-four million, twenty thousand, four hundred twenty".