1289484 has 108 divisors (see below), whose sum is σ = 4108104. Its totient is φ = 338688.

The previous prime is 1289459. The next prime is 1289513. The reversal of 1289484 is 4849821.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (18432) is a multiple of the sum of its prime divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29967 + ... + 30009.

It is an arithmetic number, because the mean of its divisors is an integer number (38038).

2^1289484 is an apocalyptic number.

1289484 is a gapful number since it is divisible by the number (14) 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 1289484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2054052).

1289484 is an abundant number, since it is smaller than the sum of its proper divisors (2818620).

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

1289484 is a wasteful number, since it uses less digits than its factorization.

1289484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 72 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 1289484 is about 1135.5544901060. The cubic root of 1289484 is about 108.8442069132.

The spelling of 1289484 in words is "one million, two hundred eighty-nine thousand, four hundred eighty-four".