13780446 has 8 divisors (see below), whose sum is σ = 27560904. Its totient is φ = 4593480.

The previous prime is 13780441. The next prime is 13780457. The reversal of 13780446 is 64408731.

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

13780446 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13780441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148365 + ... + 1148376.

It is an arithmetic number, because the mean of its divisors is an integer number (3445113).

Almost surely, 2^13780446 is an apocalyptic number.

13780446 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13780446 is a wasteful number, since it uses less digits than its factorization.

13780446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2296746.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 13780446 is about 3712.2023112972. The cubic root of 13780446 is about 239.7476862225.

The spelling of 13780446 in words is "thirteen million, seven hundred eighty thousand, four hundred forty-six".