340404506 has 16 divisors (see below), whose sum is σ = 553581000. Its totient is φ = 156053568.

The previous prime is 340404499. The next prime is 340404511. The reversal of 340404506 is 605404043.

It can be written as a sum of positive squares in 4 ways, for example, as 71149225 + 269255281 = 8435^2 + 16409^2 .

It is a super-3 number, since 3×340404506³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40061 + ... + 47808.

Almost surely, 2^340404506 is an apocalyptic number.

340404506 is a deficient number, since it is larger than the sum of its proper divisors (213176494).

340404506 is a wasteful number, since it uses less digits than its factorization.

340404506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88033.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 340404506 is about 18450.0543630635. The cubic root of 340404506 is about 698.2298854454.

Adding to 340404506 its reverse (605404043), we get a palindrome (945808549).

The spelling of 340404506 in words is "three hundred forty million, four hundred four thousand, five hundred six".