1444000020 has 24 divisors (see below), whose sum is σ = 4043200224. Its totient is φ = 385066656.

The previous prime is 1444000003. The next prime is 1444000027. The reversal of 1444000020 is 200004441.

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 (1444000027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12033274 + ... + 12033393.

It is an arithmetic number, because the mean of its divisors is an integer number (168466676).

Almost surely, 2^1444000020 is an apocalyptic number.

1444000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444000020 is an abundant number, since it is smaller than the sum of its proper divisors (2599200204).

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

1444000020 is a wasteful number, since it uses less digits than its factorization.

1444000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24066679 (or 24066677 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 1444000020 is about 38000.0002631579. Note that the first 3 decimals coincide. The cubic root of 1444000020 is about 1130.2878688104.

Adding to 1444000020 its reverse (200004441), we get a palindrome (1644004461).

The spelling of 1444000020 in words is "one billion, four hundred forty-four million, twenty", and thus it is an aban number.