13448778 has 16 divisors (see below), whose sum is σ = 30740160. Its totient is φ = 3842496.

The previous prime is 13448737. The next prime is 13448783. The reversal of 13448778 is 87784431.

13448778 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 320209 = 13448778 / (1 + 3 + 4 + 4 + 8 + 7 + 7 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160063 + ... + 160146.

It is an arithmetic number, because the mean of its divisors is an integer number (1921260).

Almost surely, 2^13448778 is an apocalyptic number.

13448778 is an abundant number, since it is smaller than the sum of its proper divisors (17291382).

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

13448778 is a wasteful number, since it uses less digits than its factorization.

13448778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320221.

The product of its digits is 150528, while the sum is 42.

The square root of 13448778 is about 3667.2575584488. The cubic root of 13448778 is about 237.8086284993.

The spelling of 13448778 in words is "thirteen million, four hundred forty-eight thousand, seven hundred seventy-eight".