1063820 has 24 divisors (see below), whose sum is σ = 2287824. Its totient is φ = 415296.

The previous prime is 1063813. The next prime is 1063823. The reversal of 1063820 is 283601.

It is a super-2 number, since 2×1063820² = 2263425984800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1063792 and 1063801.

It is not an unprimeable number, because it can be changed into a prime (1063823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242 + ... + 1478.

It is an arithmetic number, because the mean of its divisors is an integer number (95326).

2^1063820 is an apocalyptic number.

1063820 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 1063820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1143912).

1063820 is an abundant number, since it is smaller than the sum of its proper divisors (1224004).

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

1063820 is a wasteful number, since it uses less digits than its factorization.

1063820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289 (or 1287 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1063820 is about 1031.4165017101. The cubic root of 1063820 is about 102.0836171957.

The spelling of 1063820 in words is "one million, sixty-three thousand, eight hundred twenty".