1920256 has 36 divisors (see below), whose sum is σ = 4135012. Its totient is φ = 884736.

The previous prime is 1920239. The next prime is 1920257. The reversal of 1920256 is 6520291.

It can be written as a sum of positive squares in 2 ways, for example, as 1254400 + 665856 = 1120^2 + 816^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1920256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920257) 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, 3040 + ... + 3616.

2^1920256 is an apocalyptic number.

1920256 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 1920256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2067506).

1920256 is an abundant number, since it is smaller than the sum of its proper divisors (2214756).

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

1920256 is an equidigital number, since it uses as much as digits as its factorization.

1920256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1920256 is about 1385.7330190192. The cubic root of 1920256 is about 124.2948239616.

The spelling of 1920256 in words is "one million, nine hundred twenty thousand, two hundred fifty-six".