1213284 has 12 divisors (see below), whose sum is σ = 2831024. Its totient is φ = 404424.

The previous prime is 1213271. The next prime is 1213301. The reversal of 1213284 is 4823121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1213284.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50542 + ... + 50565.

2^1213284 is an apocalyptic number.

It is an amenable number.

1213284 is an abundant number, since it is smaller than the sum of its proper divisors (1617740).

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

1213284 is a wasteful number, since it uses less digits than its factorization.

1213284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101114 (or 101112 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 1213284 is about 1101.4917158109. The cubic root of 1213284 is about 106.6565398372.

The spelling of 1213284 in words is "one million, two hundred thirteen thousand, two hundred eighty-four".