1722320768 has 32 divisors (see below), whose sum is σ = 3921357360. Its totient is φ = 738137088.

The previous prime is 1722320767. The next prime is 1722320771. The reversal of 1722320768 is 8670232271.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722320767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960221 + ... + 962012.

Almost surely, 2^1722320768 is an apocalyptic number.

It is an amenable number.

1722320768 is an abundant number, since it is smaller than the sum of its proper divisors (2199036592).

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

1722320768 is an equidigital number, since it uses as much as digits as its factorization.

1722320768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922254 (or 1922242 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 1722320768 is about 41500.8526177475. The cubic root of 1722320768 is about 1198.6839201021.

The spelling of 1722320768 in words is "one billion, seven hundred twenty-two million, three hundred twenty thousand, seven hundred sixty-eight".