1016020 has 24 divisors (see below), whose sum is σ = 2192904. Its totient is φ = 395136.

The previous prime is 1016011. The next prime is 1016023. The reversal of 1016020 is 206101.

1016020 = T₆₃₅ + T₆₃₆ + ... + T₆₃₉.

It can be written as a sum of positive squares in 4 ways, for example, as 611524 + 404496 = 782^2 + 636^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1015988 and 1016006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016023) 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, 54 + ... + 1426.

It is an arithmetic number, because the mean of its divisors is an integer number (91371).

2^1016020 is an apocalyptic number.

1016020 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 1016020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1096452).

1016020 is an abundant number, since it is smaller than the sum of its proper divisors (1176884).

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

1016020 is a wasteful number, since it uses less digits than its factorization.

1016020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419 (or 1417 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1016020 is about 1007.9781743669. The cubic root of 1016020 is about 100.5311735510.

The spelling of 1016020 in words is "one million, sixteen thousand, twenty".