1720480 has 24 divisors (see below), whose sum is σ = 4065012. Its totient is φ = 688128.

The previous prime is 1720471. The next prime is 1720513. The reversal of 1720480 is 840271.

It can be written as a sum of positive squares in 2 ways, for example, as 1648656 + 71824 = 1284^2 + 268^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5217 + ... + 5536.

2^1720480 is an apocalyptic number.

1720480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1720480 is an abundant number, since it is smaller than the sum of its proper divisors (2344532).

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

1720480 is a wasteful number, since it uses less digits than its factorization.

1720480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10768 (or 10760 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1720480 is about 1311.6706903793. The cubic root of 1720480 is about 119.8256727988.

The spelling of 1720480 in words is "one million, seven hundred twenty thousand, four hundred eighty".