1061280 has 144 divisors (see below), whose sum is σ = 4009824. Its totient is φ = 253440.

The previous prime is 1061279. The next prime is 1061287. The reversal of 1061280 is 821601.

1061280 = 111² + 112² + ... + 165².

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×1061280² = 2252630476800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1061287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15807 + ... + 15873.

It is an arithmetic number, because the mean of its divisors is an integer number (27846).

2^1061280 is an apocalyptic number.

1061280 is a gapful number since it is divisible by the number (10) 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 1061280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2004912).

1061280 is an abundant number, since it is smaller than the sum of its proper divisors (2948544).

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

1061280 is a wasteful number, since it uses less digits than its factorization.

1061280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1061280 is about 1030.1844495041. The cubic root of 1061280 is about 102.0023067529.

Adding to 1061280 its reverse (821601), we get a palindrome (1882881).

The spelling of 1061280 in words is "one million, sixty-one thousand, two hundred eighty".