340728892417 has 4 divisors (see below), whose sum is σ = 340734627396. Its totient is φ = 340723157440.

The previous prime is 340728892409. The next prime is 340728892487. The reversal of 340728892417 is 714298827043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 714298827043 = 23 ⋅31056470741.

It can be written as a sum of positive squares in 2 ways, for example, as 339936807681 + 792084736 = 583041^2 + 28144^2 .

It is a cyclic number.

It is not a de Polignac number, because 340728892417 - 2³ = 340728892409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340728892487) 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, 2777428 + ... + 2897509.

It is an arithmetic number, because the mean of its divisors is an integer number (85183656849).

Almost surely, 2^340728892417 is an apocalyptic number.

It is an amenable number.

340728892417 is a deficient number, since it is larger than the sum of its proper divisors (5734979).

340728892417 is an equidigital number, since it uses as much as digits as its factorization.

340728892417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5734978.

The product of its (nonzero) digits is 5419008, while the sum is 55.

The spelling of 340728892417 in words is "three hundred forty billion, seven hundred twenty-eight million, eight hundred ninety-two thousand, four hundred seventeen".