1024020 has 36 divisors (see below), whose sum is σ = 3106740. Its totient is φ = 273024.

The previous prime is 1023991. The next prime is 1024021. The reversal of 1024020 is 204201.

It can be written as a sum of positive squares in 2 ways, for example, as 725904 + 298116 = 852^2 + 546^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1023993 and 1024011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1024021) 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, 2665 + ... + 3024.

2^1024020 is an apocalyptic number.

1024020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1024020 is an abundant number, since it is smaller than the sum of its proper divisors (2082720).

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

1024020 is a wasteful number, since it uses less digits than its factorization.

1024020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5704 (or 5699 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 1024020 is about 1011.9387333233. The cubic root of 1024020 is about 100.7943401962.

Adding to 1024020 its reverse (204201), we get a palindrome (1228221).

The spelling of 1024020 in words is "one million, twenty-four thousand, twenty".