1284960 has 48 divisors (see below), whose sum is σ = 4049136. Its totient is φ = 342528.

The previous prime is 1284937. The next prime is 1284967. The reversal of 1284960 is 694821.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1284960² = 3302244403200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 859 + ... + 1818.

It is an arithmetic number, because the mean of its divisors is an integer number (84357).

2^1284960 is an apocalyptic number.

1284960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1284960 is an abundant number, since it is smaller than the sum of its proper divisors (2764176).

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

1284960 is a wasteful number, since it uses less digits than its factorization.

1284960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2695 (or 2687 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1284960 is about 1133.5607614945. The cubic root of 1284960 is about 108.7167688133.

The spelling of 1284960 in words is "one million, two hundred eighty-four thousand, nine hundred sixty".