340139506 has 16 divisors (see below), whose sum is σ = 583738560. Its totient is φ = 145613520.

The previous prime is 340139497. The next prime is 340139507. The reversal of 340139506 is 605931043.

340139506 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (340139507) 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, 265 + ... + 26083.

It is an arithmetic number, because the mean of its divisors is an integer number (36483660).

Almost surely, 2^340139506 is an apocalyptic number.

340139506 is a deficient number, since it is larger than the sum of its proper divisors (243599054).

340139506 is a wasteful number, since it uses less digits than its factorization.

340139506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26769.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 340139506 is about 18442.8714141806. The cubic root of 340139506 is about 698.0486511082.

The spelling of 340139506 in words is "three hundred forty million, one hundred thirty-nine thousand, five hundred six".