1720160 has 48 divisors (see below), whose sum is σ = 4381776. Its totient is φ = 634368.

The previous prime is 1720157. The next prime is 1720163. The reversal of 1720160 is 610271.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1720157) and next prime (1720163).

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1667 + ... + 2493.

It is an arithmetic number, because the mean of its divisors is an integer number (91287).

2^1720160 is an apocalyptic number.

1720160 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 1720160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2190888).

1720160 is an abundant number, since it is smaller than the sum of its proper divisors (2661616).

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

1720160 is a wasteful number, since it uses less digits than its factorization.

1720160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 1720160 is about 1311.5487028700. The cubic root of 1720160 is about 119.8182433619.

The spelling of 1720160 in words is "one million, seven hundred twenty thousand, one hundred sixty".