1227984 has 20 divisors (see below), whose sum is σ = 3172416. Its totient is φ = 409312.

The previous prime is 1227983. The next prime is 1228001. The reversal of 1227984 is 4897221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12744 + ... + 12839.

2^1227984 is an apocalyptic number.

It is an amenable number.

1227984 is an abundant number, since it is smaller than the sum of its proper divisors (1944432).

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

1227984 is a wasteful number, since it uses less digits than its factorization.

1227984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25594 (or 25588 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 1227984 is about 1108.1443949233. The cubic root of 1227984 is about 107.0855576795.

It can be divided in two parts, 1227 and 984, that added together give a triangular number (2211 = T₆₆).

The spelling of 1227984 in words is "one million, two hundred twenty-seven thousand, nine hundred eighty-four".