1720748260 has 144 divisors (see below), whose sum is σ = 4575336192. Its totient is φ = 532097280.

The previous prime is 1720748219. The next prime is 1720748269. The reversal of 1720748260 is 628470271.

It is not an unprimeable number, because it can be changed into a prime (1720748269) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2659257 + ... + 2659903.

It is an arithmetic number, because the mean of its divisors is an integer number (31773168).

Almost surely, 2^1720748260 is an apocalyptic number.

1720748260 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 1720748260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2287668096).

1720748260 is an abundant number, since it is smaller than the sum of its proper divisors (2854587932).

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

1720748260 is a wasteful number, since it uses less digits than its factorization.

1720748260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 1720748260 is about 41481.9028011011. The cubic root of 1720748260 is about 1198.3190027880.

The spelling of 1720748260 in words is "one billion, seven hundred twenty million, seven hundred forty-eight thousand, two hundred sixty".