13780334 has 4 divisors (see below), whose sum is σ = 20670504. Its totient is φ = 6890166.

The previous prime is 13780331. The next prime is 13780369. The reversal of 13780334 is 43308731.

13780334 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 13780297 and 13780306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13780331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3445082 + ... + 3445085.

It is an arithmetic number, because the mean of its divisors is an integer number (5167626).

Almost surely, 2^13780334 is an apocalyptic number.

13780334 is a deficient number, since it is larger than the sum of its proper divisors (6890170).

13780334 is an equidigital number, since it uses as much as digits as its factorization.

13780334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890169.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 13780334 is about 3712.1872258818. The cubic root of 13780334 is about 239.7470367076.

The spelling of 13780334 in words is "thirteen million, seven hundred eighty thousand, three hundred thirty-four".