13420515 has 16 divisors (see below), whose sum is σ = 21973248. Its totient is φ = 6990816.

The previous prime is 13420499. The next prime is 13420541. The reversal of 13420515 is 51502431.

It is not a de Polignac number, because 13420515 - 2⁴ = 13420499 is a prime.

It is a super-2 number, since 2×13420515² = 360220445730450, which contains 22 as substring.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 13420491 and 13420500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9759 + ... + 11048.

It is an arithmetic number, because the mean of its divisors is an integer number (1373328).

Almost surely, 2^13420515 is an apocalyptic number.

13420515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13420515 is a deficient number, since it is larger than the sum of its proper divisors (8552733).

13420515 is a wasteful number, since it uses less digits than its factorization.

13420515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20858.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 13420515 is about 3663.4021073314. The cubic root of 13420515 is about 237.6419244060.

Adding to 13420515 its reverse (51502431), we get a palindrome (64922946).

The spelling of 13420515 in words is "thirteen million, four hundred twenty thousand, five hundred fifteen".