1284464 has 10 divisors (see below), whose sum is σ = 2488680. Its totient is φ = 642224.

The previous prime is 1284443. The next prime is 1284467. The reversal of 1284464 is 4644821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40124 + ... + 40155.

It is an arithmetic number, because the mean of its divisors is an integer number (248868).

2^1284464 is an apocalyptic number.

It is an amenable number.

1284464 is a deficient number, since it is larger than the sum of its proper divisors (1204216).

1284464 is an equidigital number, since it uses as much as digits as its factorization.

1284464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80287 (or 80281 counting only the distinct ones).

The product of its digits is 6144, while the sum is 29.

The square root of 1284464 is about 1133.3419607515. The cubic root of 1284464 is about 108.7027786354.

The spelling of 1284464 in words is "one million, two hundred eighty-four thousand, four hundred sixty-four".