1392256 has 32 divisors (see below), whose sum is σ = 2830500. Its totient is φ = 681984.

The previous prime is 1392253. The next prime is 1392269. The reversal of 1392256 is 6522931.

1392256 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 2 ways, for example, as 1345600 + 46656 = 1160^2 + 216^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392253) 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, 9270 + ... + 9418.

2^1392256 is an apocalyptic number.

1392256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1392256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1415250).

1392256 is an abundant number, since it is smaller than the sum of its proper divisors (1438244).

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

1392256 is an equidigital number, since it uses as much as digits as its factorization.

1392256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 224 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 1392256 is about 1179.9389814732. The cubic root of 1392256 is about 111.6622477893.

The spelling of 1392256 in words is "one million, three hundred ninety-two thousand, two hundred fifty-six".