13113378 has 12 divisors (see below), whose sum is σ = 28412358. Its totient is φ = 4371120.

The previous prime is 13113377. The next prime is 13113379. The reversal of 13113378 is 87331131.

It is an interprime number because it is at equal distance from previous prime (13113377) and next prime (13113379).

It can be written as a sum of positive squares in only one way, i.e., 12981609 + 131769 = 3603^2 + 363^2 .

It is not an unprimeable number, because it can be changed into a prime (13113377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 364243 + ... + 364278.

Almost surely, 2^13113378 is an apocalyptic number.

13113378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13113378 is an abundant number, since it is smaller than the sum of its proper divisors (15298980).

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

13113378 is a wasteful number, since it uses less digits than its factorization.

13113378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728529 (or 728526 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 13113378 is about 3621.2398429267. The cubic root of 13113378 is about 235.8150542782.

The spelling of 13113378 in words is "thirteen million, one hundred thirteen thousand, three hundred seventy-eight".