1722154656 has 96 divisors (see below), whose sum is σ = 4710182400. Its totient is φ = 550333440.

The previous prime is 1722154639. The next prime is 1722154657. The reversal of 1722154656 is 6564512271.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (1722154657) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 321730 + ... + 327038.

It is an arithmetic number, because the mean of its divisors is an integer number (49064400).

Almost surely, 2^1722154656 is an apocalyptic number.

1722154656 is a gapful number since it is divisible by the number (16) 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 1722154656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2355091200).

1722154656 is an abundant number, since it is smaller than the sum of its proper divisors (2988027744).

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

1722154656 is a wasteful number, since it uses less digits than its factorization.

1722154656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5462 (or 5454 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 1722154656 is about 41498.8512612096. The cubic root of 1722154656 is about 1198.6453825294.

The spelling of 1722154656 in words is "one billion, seven hundred twenty-two million, one hundred fifty-four thousand, six hundred fifty-six".