1230444020 has 96 divisors (see below), whose sum is σ = 3009581568. Its totient is φ = 418424832.

The previous prime is 1230443947. The next prime is 1230444023. The reversal of 1230444020 is 204440321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1230443983 and 1230444001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230444023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204779 + ... + 210701.

It is an arithmetic number, because the mean of its divisors is an integer number (31349808).

Almost surely, 2^1230444020 is an apocalyptic number.

1230444020 is a gapful number since it is divisible by the number (10) 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 1230444020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1504790784).

1230444020 is an abundant number, since it is smaller than the sum of its proper divisors (1779137548).

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

1230444020 is a wasteful number, since it uses less digits than its factorization.

1230444020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6009 (or 6007 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1230444020 is about 35077.6854994739. The cubic root of 1230444020 is about 1071.5701813758.

Adding to 1230444020 its reverse (204440321), we get a palindrome (1434884341).

The spelling of 1230444020 in words is "one billion, two hundred thirty million, four hundred forty-four thousand, twenty".