1728040939340 has 48 divisors (see below), whose sum is σ = 3848234497632. Its totient is φ = 649560247296.

The previous prime is 1728040939333. The next prime is 1728040939433. The reversal of 1728040939340 is 439390408271.

It is a super-2 number, since 2×1728040939340² (a number of 25 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 3669614 + ... + 4113653.

It is an arithmetic number, because the mean of its divisors is an integer number (80171552034).

Almost surely, 2^{1728040939340} is an apocalyptic number.

1728040939340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1728040939340 is an abundant number, since it is smaller than the sum of its proper divisors (2120193558292).

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

1728040939340 is a wasteful number, since it uses less digits than its factorization.

1728040939340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7783946 (or 7783944 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 1728040939340 in words is "one trillion, seven hundred twenty-eight billion, forty million, nine hundred thirty-nine thousand, three hundred forty".