1489578720 has 192 divisors, whose sum is σ = 5644961280. Its totient is φ = 322541568.

The previous prime is 1489578719. The next prime is 1489578721. The reversal of 1489578720 is 278759841.

It is an interprime number because it is at equal distance from previous prime (1489578719) and next prime (1489578721).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489578721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52174 + ... + 75506.

It is an arithmetic number, because the mean of its divisors is an integer number (29400840).

Almost surely, 2^1489578720 is an apocalyptic number.

1489578720 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 1489578720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2822480640).

1489578720 is an abundant number, since it is smaller than the sum of its proper divisors (4155382560).

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

1489578720 is a wasteful number, since it uses less digits than its factorization.

1489578720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23377 (or 23369 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 51.

The square root of 1489578720 is about 38595.0608238930. The cubic root of 1489578720 is about 1142.0571044817.

The spelling of 1489578720 in words is "one billion, four hundred eighty-nine million, five hundred seventy-eight thousand, seven hundred twenty".