1722506940 has 576 divisors, whose sum is σ = 7111802880. Its totient is φ = 326592000.

The previous prime is 1722506927. The next prime is 1722506983. The reversal of 1722506940 is 496052271.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1722506895 and 1722506904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8163435 + ... + 8163645.

It is an arithmetic number, because the mean of its divisors is an integer number (12346880).

Almost surely, 2^1722506940 is an apocalyptic number.

1722506940 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 1722506940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3555901440).

1722506940 is an abundant number, since it is smaller than the sum of its proper divisors (5389295940).

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

1722506940 is a wasteful number, since it uses less digits than its factorization.

1722506940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1722506940 is about 41503.0955471998. The cubic root of 1722506940 is about 1198.7271086003.

The spelling of 1722506940 in words is "one billion, seven hundred twenty-two million, five hundred six thousand, nine hundred forty".