1720473040 has 160 divisors (see below), whose sum is σ = 4780944000. Its totient is φ = 567490560.

The previous prime is 1720473031. The next prime is 1720473067. The reversal of 1720473040 is 403740271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 673686 + ... + 676234.

It is an arithmetic number, because the mean of its divisors is an integer number (29880900).

Almost surely, 2^1720473040 is an apocalyptic number.

1720473040 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 1720473040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2390472000).

1720473040 is an abundant number, since it is smaller than the sum of its proper divisors (3060470960).

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

1720473040 is a wasteful number, since it uses less digits than its factorization.

1720473040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645 (or 2639 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 1720473040 is about 41478.5853182097. The cubic root of 1720473040 is about 1198.2551121833.

The spelling of 1720473040 in words is "one billion, seven hundred twenty million, four hundred seventy-three thousand, forty".