1285064 has 32 divisors (see below), whose sum is σ = 2786400. Its totient is φ = 549120.

The previous prime is 1285061. The next prime is 1285069. The reversal of 1285064 is 4605821.

1285064 = T₁₂₅ + T₁₂₆ + ... + T₂₁₂.

It is not an unprimeable number, because it can be changed into a prime (1285061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067 + ... + 1925.

It is an arithmetic number, because the mean of its divisors is an integer number (87075).

2^1285064 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 1285064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1393200).

1285064 is an abundant number, since it is smaller than the sum of its proper divisors (1501336).

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

1285064 is a wasteful number, since it uses less digits than its factorization.

1285064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1285064 is about 1133.6066337138. The cubic root of 1285064 is about 108.7197017811.

The spelling of 1285064 in words is "one million, two hundred eighty-five thousand, sixty-four".