13077378 has 12 divisors (see below), whose sum is σ = 28334358. Its totient is φ = 4359120.

The previous prime is 13077373. The next prime is 13077413. The reversal of 13077378 is 87377031.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12510369 + 567009 = 3537^2 + 753^2 .

It is not an unprimeable number, because it can be changed into a prime (13077373) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 363243 + ... + 363278.

Almost surely, 2^13077378 is an apocalyptic number.

13077378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13077378 is an abundant number, since it is smaller than the sum of its proper divisors (15256980).

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

13077378 is a wasteful number, since it uses less digits than its factorization.

13077378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726529 (or 726526 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 13077378 is about 3616.2657535087. The cubic root of 13077378 is about 235.5990630875.

The spelling of 13077378 in words is "thirteen million, seventy-seven thousand, three hundred seventy-eight".