340728843 has 96 divisors (see below), whose sum is σ = 614645760. Its totient is φ = 163762560.

The previous prime is 340728811. The next prime is 340728847. The reversal of 340728843 is 348827043.

It is not a de Polignac number, because 340728843 - 2⁵ = 340728811 is a prime.

It is a super-2 number, since 2×340728843² = 232192288904237298, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340728847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2090280 + ... + 2090442.

It is an arithmetic number, because the mean of its divisors is an integer number (6402560).

Almost surely, 2^340728843 is an apocalyptic number.

340728843 is a deficient number, since it is larger than the sum of its proper divisors (273916917).

340728843 is a wasteful number, since it uses less digits than its factorization.

340728843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 340728843 is about 18458.8418650792. The cubic root of 340728843 is about 698.4515725815.

The spelling of 340728843 in words is "three hundred forty million, seven hundred twenty-eight thousand, eight hundred forty-three".