1272984 has 64 divisors (see below), whose sum is σ = 3456000. Its totient is φ = 389760.

The previous prime is 1272983. The next prime is 1272989. The reversal of 1272984 is 4892721.

It is a happy number.

Its product of digits (8064) is a multiple of the sum of its prime factors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21547 + ... + 21605.

It is an arithmetic number, because the mean of its divisors is an integer number (54000).

2^1272984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1272984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1728000).

1272984 is an abundant number, since it is smaller than the sum of its proper divisors (2183016).

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

1272984 is a wasteful number, since it uses less digits than its factorization.

1272984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 124 counting only the distinct ones).

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

The square root of 1272984 is about 1128.2659261008. The cubic root of 1272984 is about 108.3779624141.

The spelling of 1272984 in words is "one million, two hundred seventy-two thousand, nine hundred eighty-four".