1720823260 has 24 divisors (see below), whose sum is σ = 3891708576. Its totient is φ = 635380800.

The previous prime is 1720823227. The next prime is 1720823261. The reversal of 1720823260 is 623280271.

It is a super-2 number, since 2×1720823260² = 5922465384314055200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720823261) 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 7 ways as a sum of consecutive naturals, for example, 3309016 + ... + 3309535.

It is an arithmetic number, because the mean of its divisors is an integer number (162154524).

Almost surely, 2^1720823260 is an apocalyptic number.

1720823260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1720823260 is an abundant number, since it is smaller than the sum of its proper divisors (2170885316).

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

1720823260 is a wasteful number, since it uses less digits than its factorization.

1720823260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6618573 (or 6618571 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1720823260 is about 41482.8067999262. The cubic root of 1720823260 is about 1198.3364123886.

The spelling of 1720823260 in words is "one billion, seven hundred twenty million, eight hundred twenty-three thousand, two hundred sixty".