1489780 has 12 divisors (see below), whose sum is σ = 3128580. Its totient is φ = 595904.

The previous prime is 1489769. The next prime is 1489781. The reversal of 1489780 is 879841.

It can be written as a sum of positive squares in 2 ways, for example, as 763876 + 725904 = 874^2 + 852^2 .

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489781) 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 3 ways as a sum of consecutive naturals, for example, 37225 + ... + 37264.

It is an arithmetic number, because the mean of its divisors is an integer number (260715).

2^1489780 is an apocalyptic number.

1489780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1489780 is an abundant number, since it is smaller than the sum of its proper divisors (1638800).

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

1489780 is a wasteful number, since it uses less digits than its factorization.

1489780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74498 (or 74496 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 1489780 is about 1220.5654427355. The cubic root of 1489780 is about 114.2108542493.

The spelling of 1489780 in words is "one million, four hundred eighty-nine thousand, seven hundred eighty".