1285056 has 84 divisors (see below), whose sum is σ = 3883152. Its totient is φ = 405504.

The previous prime is 1285051. The next prime is 1285057. The reversal of 1285056 is 6505821.

1285056 = T₂₁₃ + T₂₁₄ + ... + T₂₅₈.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13200 + ... + 13296.

It is an arithmetic number, because the mean of its divisors is an integer number (46228).

2^1285056 is an apocalyptic number.

1285056 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 1285056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1941576).

1285056 is an abundant number, since it is smaller than the sum of its proper divisors (2598096).

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

1285056 is a wasteful number, since it uses less digits than its factorization.

1285056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1285056 is about 1133.6031051475. The cubic root of 1285056 is about 108.7194761738.

It can be divided in two parts, 128 and 5056, that added together give a square (5184 = 72²).

The spelling of 1285056 in words is "one million, two hundred eighty-five thousand, fifty-six".