1722729960 has 192 divisors, whose sum is σ = 6459523200. Its totient is φ = 390025728.

The previous prime is 1722729959. The next prime is 1722729977. The reversal of 1722729960 is 699272271.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 266446 + ... + 272834.

It is an arithmetic number, because the mean of its divisors is an integer number (33643350).

Almost surely, 2^1722729960 is an apocalyptic number.

1722729960 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 1722729960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3229761600).

1722729960 is an abundant number, since it is smaller than the sum of its proper divisors (4736793240).

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

1722729960 is a wasteful number, since it uses less digits than its factorization.

1722729960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6520 (or 6513 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 1722729960 is about 41505.7822477784. The cubic root of 1722729960 is about 1198.7788410639.

The spelling of 1722729960 in words is "one billion, seven hundred twenty-two million, seven hundred twenty-nine thousand, nine hundred sixty".