13409258 has 8 divisors (see below), whose sum is σ = 20292228. Its totient is φ = 6645184.

The previous prime is 13409251. The next prime is 13409287. The reversal of 13409258 is 85290431.

It can be written as a sum of positive squares in 2 ways, for example, as 11854249 + 1555009 = 3443^2 + 1247^2 .

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

It is a super-2 number, since 2×13409258² = 359616400221128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13409251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29441 + ... + 29892.

Almost surely, 2^13409258 is an apocalyptic number.

13409258 is a deficient number, since it is larger than the sum of its proper divisors (6882970).

13409258 is a wasteful number, since it uses less digits than its factorization.

13409258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59448.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 13409258 is about 3661.8653716378. The cubic root of 13409258 is about 237.5754618932.

Adding to 13409258 its reverse (85290431), we get a palindrome (98699689).

The spelling of 13409258 in words is "thirteen million, four hundred nine thousand, two hundred fifty-eight".