1024720 has 20 divisors (see below), whose sum is σ = 2382660. Its totient is φ = 409856.

The previous prime is 1024711. The next prime is 1024721. The reversal of 1024720 is 274201.

1024720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 345744 + 678976 = 588^2 + 824^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1024694 and 1024703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1024721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6325 + ... + 6484.

It is an arithmetic number, because the mean of its divisors is an integer number (119133).

2^1024720 is an apocalyptic number.

1024720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1024720 is an abundant number, since it is smaller than the sum of its proper divisors (1357940).

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

1024720 is a wasteful number, since it uses less digits than its factorization.

1024720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12822 (or 12816 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 1024720 is about 1012.2845449773. The cubic root of 1024720 is about 100.8173019767.

Adding to 1024720 its reverse (274201), we get a palindrome (1298921).

The spelling of 1024720 in words is "one million, twenty-four thousand, seven hundred twenty".