1722049680 has 160 divisors (see below), whose sum is σ = 6087360384. Its totient is φ = 398942208.

The previous prime is 1722049673. The next prime is 1722049723. The reversal of 1722049680 is 869402271.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 36807 + ... + 69273.

Almost surely, 2^1722049680 is an apocalyptic number.

1722049680 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 1722049680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3043680192).

1722049680 is an abundant number, since it is smaller than the sum of its proper divisors (4365310704).

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

1722049680 is a wasteful number, since it uses less digits than its factorization.

1722049680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32513 (or 32507 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 1722049680 is about 41497.5864358399. The cubic root of 1722049680 is about 1198.6210270795.

The spelling of 1722049680 in words is "one billion, seven hundred twenty-two million, forty-nine thousand, six hundred eighty".