13023378 has 48 divisors (see below), whose sum is σ = 29741400. Its totient is φ = 4112640.

The previous prime is 13023289. The next prime is 13023383. The reversal of 13023378 is 87332031.

It can be written as a sum of positive squares in 4 ways, for example, as 10673289 + 2350089 = 3267^2 + 1533^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31638 + ... + 32046.

Almost surely, 2^13023378 is an apocalyptic number.

13023378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13023378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14870700).

13023378 is an abundant number, since it is smaller than the sum of its proper divisors (16718022).

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

13023378 is a wasteful number, since it uses less digits than its factorization.

13023378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 13023378 is about 3608.7917645661. The cubic root of 13023378 is about 235.2743318093.

The spelling of 13023378 in words is "thirteen million, twenty-three thousand, three hundred seventy-eight".