1012720 has 20 divisors (see below), whose sum is σ = 2354760. Its totient is φ = 405056.

The previous prime is 1012717. The next prime is 1012721. The reversal of 1012720 is 272101.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6250 + ... + 6409.

It is an arithmetic number, because the mean of its divisors is an integer number (117738).

2^1012720 is an apocalyptic number.

1012720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012720 is an abundant number, since it is smaller than the sum of its proper divisors (1342040).

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

1012720 is a wasteful number, since it uses less digits than its factorization.

1012720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12672 (or 12666 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 1012720 is about 1006.3399028161. The cubic root of 1012720 is about 100.4222148374.

Adding to 1012720 its reverse (272101), we get a palindrome (1284821).

The spelling of 1012720 in words is "one million, twelve thousand, seven hundred twenty".