1272392 has 32 divisors (see below), whose sum is σ = 2743200. Its totient is φ = 547200.

The previous prime is 1272379. The next prime is 1272409. The reversal of 1272392 is 2932721.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1292 + ... + 2052.

It is an arithmetic number, because the mean of its divisors is an integer number (85725).

2^1272392 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 1272392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1371600).

1272392 is an abundant number, since it is smaller than the sum of its proper divisors (1470808).

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

1272392 is a wasteful number, since it uses less digits than its factorization.

1272392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 793 counting only the distinct ones).

The product of its digits is 1512, while the sum is 26.

The square root of 1272392 is about 1128.0035460937. The cubic root of 1272392 is about 108.3611594530.

The spelling of 1272392 in words is "one million, two hundred seventy-two thousand, three hundred ninety-two".