13051216 has 20 divisors (see below), whose sum is σ = 25420000. Its totient is φ = 6491232.

The previous prime is 13051201. The next prime is 13051219. The reversal of 13051216 is 61215031.

It is a junction number, because it is equal to n+sod(n) for n = 13051193 and 13051202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13051219) 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, 1135 + ... + 5233.

It is an arithmetic number, because the mean of its divisors is an integer number (1271000).

Almost surely, 2^13051216 is an apocalyptic number.

13051216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13051216 is a deficient number, since it is larger than the sum of its proper divisors (12368784).

13051216 is a wasteful number, since it uses less digits than its factorization.

13051216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4306 (or 4300 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 13051216 is about 3612.6466752230. The cubic root of 13051216 is about 235.4418486580.

Adding to 13051216 its reverse (61215031), we get a palindrome (74266247).

The spelling of 13051216 in words is "thirteen million, fifty-one thousand, two hundred sixteen".