1720941256 has 16 divisors (see below), whose sum is σ = 3265642800. Its totient is φ = 850103184.

The previous prime is 1720941251. The next prime is 1720941301. The reversal of 1720941256 is 6521490271.

It is not an unprimeable number, because it can be changed into a prime (1720941251) 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, 1295226 + ... + 1296553.

It is an arithmetic number, because the mean of its divisors is an integer number (204102675).

Almost surely, 2^1720941256 is an apocalyptic number.

It is an amenable number.

1720941256 is a deficient number, since it is larger than the sum of its proper divisors (1544701544).

1720941256 is a wasteful number, since it uses less digits than its factorization.

1720941256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591868 (or 2591864 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 1720941256 is about 41484.2290033213. The cubic root of 1720941256 is about 1198.3638015410.

The spelling of 1720941256 in words is "one billion, seven hundred twenty million, nine hundred forty-one thousand, two hundred fifty-six".