13780233 has 8 divisors (see below), whose sum is σ = 20415200. Its totient is φ = 9186804.

The previous prime is 13780231. The next prime is 13780279. The reversal of 13780233 is 33208731.

It is not a de Polignac number, because 13780233 - 2¹ = 13780231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 510379 = 13780233 / (1 + 3 + 7 + 8 + 0 + 2 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13780197 and 13780206.

It is not an unprimeable number, because it can be changed into a prime (13780231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255163 + ... + 255216.

It is an arithmetic number, because the mean of its divisors is an integer number (2551900).

Almost surely, 2^13780233 is an apocalyptic number.

It is an amenable number.

13780233 is a deficient number, since it is larger than the sum of its proper divisors (6634967).

13780233 is an equidigital number, since it uses as much as digits as its factorization.

13780233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510388 (or 510382 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 13780233 is about 3712.1736220172. The cubic root of 13780233 is about 239.7464509814.

Adding to 13780233 its reverse (33208731), we get a palindrome (46988964).

The spelling of 13780233 in words is "thirteen million, seven hundred eighty thousand, two hundred thirty-three".