340006638 has 8 divisors (see below), whose sum is σ = 680013288. Its totient is φ = 113335544.

The previous prime is 340006637. The next prime is 340006651. The reversal of 340006638 is 836600043.

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

340006638 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340006637) 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 3 ways as a sum of consecutive naturals, for example, 28333881 + ... + 28333892.

It is an arithmetic number, because the mean of its divisors is an integer number (85001661).

Almost surely, 2^340006638 is an apocalyptic number.

340006638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

340006638 is a wasteful number, since it uses less digits than its factorization.

340006638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56667778.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 340006638 is about 18439.2689117546. The cubic root of 340006638 is about 697.9577468313.

The spelling of 340006638 in words is "three hundred forty million, six thousand, six hundred thirty-eight".