1722201280 has 112 divisors (see below), whose sum is σ = 4269735936. Its totient is φ = 660925440.

The previous prime is 1722201277. The next prime is 1722201281. The reversal of 1722201280 is 821022271.

It is not an unprimeable number, because it can be changed into a prime (1722201281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1259157 + ... + 1260523.

Almost surely, 2^1722201280 is an apocalyptic number.

1722201280 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 1722201280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2134867968).

1722201280 is an abundant number, since it is smaller than the sum of its proper divisors (2547534656).

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

1722201280 is a wasteful number, since it uses less digits than its factorization.

1722201280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542 (or 1532 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 1722201280 is about 41499.4130078969. The cubic root of 1722201280 is about 1198.6561994321.

The spelling of 1722201280 in words is "one billion, seven hundred twenty-two million, two hundred one thousand, two hundred eighty".