13780423 has 8 divisors (see below), whose sum is σ = 14392080. Its totient is φ = 13177920.

The previous prime is 13780397. The next prime is 13780433. The reversal of 13780423 is 32408731.

13780423 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13780423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13780391 and 13780400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13780433) 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, 883 + ... + 5323.

It is an arithmetic number, because the mean of its divisors is an integer number (1799010).

Almost surely, 2^13780423 is an apocalyptic number.

13780423 is a deficient number, since it is larger than the sum of its proper divisors (611657).

13780423 is a wasteful number, since it uses less digits than its factorization.

13780423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4577.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 13780423 is about 3712.1992134044. The cubic root of 13780423 is about 239.7475528403.

The spelling of 13780423 in words is "thirteen million, seven hundred eighty thousand, four hundred twenty-three".