340405630 has 32 divisors (see below), whose sum is σ = 628746624. Its totient is φ = 132621216.

The previous prime is 340405621. The next prime is 340405651. The reversal of 340405630 is 36504043.

It is a junction number, because it is equal to n+sod(n) for n = 340405595 and 340405604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189597 + ... + 191383.

It is an arithmetic number, because the mean of its divisors is an integer number (19648332).

Almost surely, 2^340405630 is an apocalyptic number.

340405630 is a deficient number, since it is larger than the sum of its proper divisors (288340994).

340405630 is a wasteful number, since it uses less digits than its factorization.

340405630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 340405630 is about 18450.0848236533. The cubic root of 340405630 is about 698.2306539522.

Adding to 340405630 its reverse (36504043), we get a palindrome (376909673).

The spelling of 340405630 in words is "three hundred forty million, four hundred five thousand, six hundred thirty".