340443438 has 32 divisors (see below), whose sum is σ = 709171200. Its totient is φ = 108853920.

The previous prime is 340443431. The next prime is 340443451. The reversal of 340443438 is 834344043.

It is a junction number, because it is equal to n+sod(n) for n = 340443399 and 340443408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340443431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4963 + ... + 26561.

It is an arithmetic number, because the mean of its divisors is an integer number (22161600).

Almost surely, 2^340443438 is an apocalyptic number.

340443438 is an abundant number, since it is smaller than the sum of its proper divisors (368727762).

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

340443438 is a wasteful number, since it uses less digits than its factorization.

340443438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21712.

The product of its (nonzero) digits is 55296, while the sum is 33.

The square root of 340443438 is about 18451.1093975403. The cubic root of 340443438 is about 698.2565032380.

The spelling of 340443438 in words is "three hundred forty million, four hundred forty-three thousand, four hundred thirty-eight".