13280816 has 10 divisors (see below), whose sum is σ = 25731612. Its totient is φ = 6640400.

The previous prime is 13280797. The next prime is 13280819. The reversal of 13280816 is 61808231.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (13280819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415010 + ... + 415041.

Almost surely, 2^13280816 is an apocalyptic number.

13280816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13280816 is a deficient number, since it is larger than the sum of its proper divisors (12450796).

13280816 is an equidigital number, since it uses as much as digits as its factorization.

13280816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830059 (or 830053 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 13280816 is about 3644.2853894831. The cubic root of 13280816 is about 236.8144797270.

The spelling of 13280816 in words is "thirteen million, two hundred eighty thousand, eight hundred sixteen".