34506405 has 20 divisors (see below), whose sum is σ = 61856652. Its totient is φ = 18403200.

The previous prime is 34506391. The next prime is 34506469. The reversal of 34506405 is 50460543.

It can be written as a sum of positive squares in 2 ways, for example, as 16916769 + 17589636 = 4113^2 + 4194^2 .

It is not a de Polignac number, because 34506405 - 2⁶ = 34506341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 42196 + ... + 43005.

Almost surely, 2^34506405 is an apocalyptic number.

It is an amenable number.

34506405 is a deficient number, since it is larger than the sum of its proper divisors (27350247).

34506405 is an equidigital number, since it uses as much as digits as its factorization.

34506405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85218 (or 85209 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 34506405 is about 5874.2152667399. The cubic root of 34506405 is about 325.5616481590.

Adding to 34506405 its reverse (50460543), we get a palindrome (84966948).

The spelling of 34506405 in words is "thirty-four million, five hundred six thousand, four hundred five".