1284480 has 96 divisors (see below), whose sum is σ = 4455360. Its totient is φ = 340992.

The previous prime is 1284473. The next prime is 1284487. The reversal of 1284480 is 844821.

It is an interprime number because it is at equal distance from previous prime (1284473) and next prime (1284487).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284487) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5649 + ... + 5871.

It is an arithmetic number, because the mean of its divisors is an integer number (46410).

2^1284480 is an apocalyptic number.

1284480 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 1284480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2227680).

1284480 is an abundant number, since it is smaller than the sum of its proper divisors (3170880).

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

1284480 is a wasteful number, since it uses less digits than its factorization.

1284480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 1284480 is about 1133.3490194993. The cubic root of 1284480 is about 108.7032299876.

It can be divided in two parts, 1284 and 480, that added together give a square (1764 = 42²).

The spelling of 1284480 in words is "one million, two hundred eighty-four thousand, four hundred eighty".