13240658 has 18 divisors (see below), whose sum is σ = 20772567. Its totient is φ = 6329580.

The previous prime is 13240657. The next prime is 13240673. The reversal of 13240658 is 85604231.

It can be written as a sum of positive squares in only one way, i.e., 6620329 + 6620329 = 2573^2 + 2573^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2573.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13240658.

It is not an unprimeable number, because it can be changed into a prime (13240651) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 159485 + ... + 159567.

Almost surely, 2^13240658 is an apocalyptic number.

13240658 is a deficient number, since it is larger than the sum of its proper divisors (7531909).

13240658 is an frugal number, since it uses more digits than its factorization.

13240658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 13240658 is about 3638.7714959860. The cubic root of 13240658 is about 236.5755486922.

Adding to 13240658 its reverse (85604231), we get a palindrome (98844889).

The spelling of 13240658 in words is "thirteen million, two hundred forty thousand, six hundred fifty-eight".