1720048 has 40 divisors (see below), whose sum is σ = 3772080. Its totient is φ = 752640.

The previous prime is 1720039. The next prime is 1720049. The reversal of 1720048 is 8400271.

It is a Harshad number since it is a multiple of its sum of digits (22).

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 (1720049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4936 + ... + 5272.

It is an arithmetic number, because the mean of its divisors is an integer number (94302).

2^1720048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1720048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1886040).

1720048 is an abundant number, since it is smaller than the sum of its proper divisors (2052032).

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

1720048 is a wasteful number, since it uses less digits than its factorization.

1720048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 379 counting only the distinct ones).

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

The square root of 1720048 is about 1311.5060045612. The cubic root of 1720048 is about 119.8156428413.

The spelling of 1720048 in words is "one million, seven hundred twenty thousand, forty-eight".