1484447920 has 80 divisors (see below), whose sum is σ = 3516024960. Its totient is φ = 582746112.

The previous prime is 1484447857. The next prime is 1484447929. The reversal of 1484447920 is 297444841.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (1484447929) 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, 1219152 + ... + 1220368.

It is an arithmetic number, because the mean of its divisors is an integer number (43950312).

Almost surely, 2^1484447920 is an apocalyptic number.

1484447920 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 1484447920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1758012480).

1484447920 is an abundant number, since it is smaller than the sum of its proper divisors (2031577040).

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

1484447920 is a wasteful number, since it uses less digits than its factorization.

1484447920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502 (or 1496 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 1484447920 is about 38528.5338418165. The cubic root of 1484447920 is about 1140.7443379436.

The spelling of 1484447920 in words is "one billion, four hundred eighty-four million, four hundred forty-seven thousand, nine hundred twenty".