13408434 has 24 divisors (see below), whose sum is σ = 31286892. Its totient is φ = 4125600.

The previous prime is 13408397. The next prime is 13408463. The reversal of 13408434 is 43480431.

It can be written as a sum of positive squares in 2 ways, for example, as 11594025 + 1814409 = 3405^2 + 1347^2 .

It is a super-2 number, since 2×13408434² = 359572204664712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13408398 and 13408407.

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 11 ways as a sum of consecutive naturals, for example, 28417 + ... + 28884.

Almost surely, 2^13408434 is an apocalyptic number.

13408434 is an abundant number, since it is smaller than the sum of its proper divisors (17878458).

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

13408434 is a wasteful number, since it uses less digits than its factorization.

13408434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57322 (or 57319 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 13408434 is about 3661.7528589461. The cubic root of 13408434 is about 237.5705954497.

Adding to 13408434 its reverse (43480431), we get a palindrome (56888865).

The spelling of 13408434 in words is "thirteen million, four hundred eight thousand, four hundred thirty-four".