13390215 has 16 divisors (see below), whose sum is σ = 21472128. Its totient is φ = 7125536.

The previous prime is 13390213. The next prime is 13390219. The reversal of 13390215 is 51209331.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13390215 - 2¹ = 13390213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13390211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9592 + ... + 10898.

It is an arithmetic number, because the mean of its divisors is an integer number (1342008).

Almost surely, 2^13390215 is an apocalyptic number.

13390215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13390215 is a deficient number, since it is larger than the sum of its proper divisors (8081913).

13390215 is a wasteful number, since it uses less digits than its factorization.

13390215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 13390215 is about 3659.2642703145. The cubic root of 13390215 is about 237.4629452809.

Adding to 13390215 its reverse (51209331), we get a palindrome (64599546).

The spelling of 13390215 in words is "thirteen million, three hundred ninety thousand, two hundred fifteen".