340352405 has 8 divisors (see below), whose sum is σ = 409658784. Its totient is φ = 271458000.

The previous prime is 340352401. The next prime is 340352483. The reversal of 340352405 is 504253043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 340352405 - 2² = 340352401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340352401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101171 + ... + 104480.

It is an arithmetic number, because the mean of its divisors is an integer number (51207348).

Almost surely, 2^340352405 is an apocalyptic number.

It is an amenable number.

340352405 is a deficient number, since it is larger than the sum of its proper divisors (69306379).

340352405 is a wasteful number, since it uses less digits than its factorization.

340352405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205987.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 340352405 is about 18448.6423619734. The cubic root of 340352405 is about 698.1942608372.

The spelling of 340352405 in words is "three hundred forty million, three hundred fifty-two thousand, four hundred five".