1722307968 has 128 divisors (see below), whose sum is σ = 5220972000. Its totient is φ = 558544896.

The previous prime is 1722307943. The next prime is 1722307987. The reversal of 1722307968 is 8697032271.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121138 + ... + 134606.

Almost surely, 2^1722307968 is an apocalyptic number.

1722307968 is a gapful number since it is divisible by the number (18) 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 1722307968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2610486000).

1722307968 is an abundant number, since it is smaller than the sum of its proper divisors (3498664032).

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

1722307968 is a wasteful number, since it uses less digits than its factorization.

1722307968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13529 (or 13511 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 1722307968 is about 41500.6984037618. The cubic root of 1722307968 is about 1198.6809506219.

The spelling of 1722307968 in words is "one billion, seven hundred twenty-two million, three hundred seven thousand, nine hundred sixty-eight".