1102720 has 32 divisors (see below), whose sum is σ = 2637720. Its totient is φ = 440832.

The previous prime is 1102709. The next prime is 1102721. The reversal of 1102720 is 272011.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1102720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222 + ... + 1501.

2^1102720 is an apocalyptic number.

1102720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1102720 is an abundant number, since it is smaller than the sum of its proper divisors (1535000).

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

1102720 is an equidigital number, since it uses as much as digits as its factorization.

1102720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742 (or 1730 counting only the distinct ones).

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

The square root of 1102720 is about 1050.1047566791. The cubic root of 1102720 is about 103.3130264177.

Adding to 1102720 its reverse (272011), we get a palindrome (1374731).

The spelling of 1102720 in words is "one million, one hundred two thousand, seven hundred twenty".